diff --git a/app/views/sessions/manage_consent_reminders/show.html.erb b/app/views/sessions/manage_consent_reminders/show.html.erb
index 78dc9162ec..b86eed8811 100644
--- a/app/views/sessions/manage_consent_reminders/show.html.erb
+++ b/app/views/sessions/manage_consent_reminders/show.html.erb
@@ -4,7 +4,6 @@
                                           { text: t("sessions.index.title"), href: sessions_path },
                                           { text: @session.location.name, href: session_path(@session) },
                                         ]) %>
-  <%= render AppBacklinkComponent.new(session_path(@session), name: @session.location.name) %>
 <% end %>
 
 <%= h1 t(".title") %>
@@ -72,4 +71,4 @@
                     class: "nhsuk-button" %>
   <% end %>
   </div>
-</div>
\ No newline at end of file
+</div>
diff --git a/db/seeds.rb b/db/seeds.rb
index dea2c32fbd..34822d7386 100644
--- a/db/seeds.rb
+++ b/db/seeds.rb
@@ -88,8 +88,11 @@ def create_session(user, team, programmes:, completed: false, year_groups: nil)
 
   session = FactoryBot.create(:session, date:, team:, programmes:, location:)
 
-  session.session_dates.create!(value: date - 1.day)
-  session.session_dates.create!(value: date + 1.day)
+  [date - 1.day, date + 1.day].each do |value|
+    if value.in?(session.academic_year.to_academic_year_date_range)
+      session.session_dates.create!(value:)
+    end
+  end
 
   programmes.each do |programme|
     year_groups.each do |year_group|
diff --git a/spec/components/app_patient_session_table_component_spec.rb b/spec/components/app_patient_session_table_component_spec.rb
index 4bd4f2f64e..7f8fc81d41 100644
--- a/spec/components/app_patient_session_table_component_spec.rb
+++ b/spec/components/app_patient_session_table_component_spec.rb
@@ -16,16 +16,16 @@
 
     let(:location) { create(:school, name: "Waterloo Road", programmes:) }
     let(:session) do
-      create(
-        :session,
-        location:,
-        programmes:,
-        academic_year: 2024,
-        date: Date.new(2025, 1, 1)
-      )
+      create(:session, location:, programmes:, date: Date.new(2025, 1, 1))
     end
 
-    let(:patient_sessions) { create_list(:patient_session, 1, session:) }
+    # Can't use year_group here because we need an absolute date, not one
+    # relative to the current academic year.
+    let(:patient) { create(:patient, date_of_birth: Date.new(2011, 9, 1)) }
+
+    let(:patient_sessions) do
+      create_list(:patient_session, 1, patient:, session:)
+    end
 
     it { should have_content("Location") }
     it { should have_content("Session dates") }
diff --git a/spec/features/cli_gias_check_import_spec.rb b/spec/features/cli_gias_check_import_spec.rb
index cf7048205d..83bca1abac 100644
--- a/spec/features/cli_gias_check_import_spec.rb
+++ b/spec/features/cli_gias_check_import_spec.rb
@@ -22,7 +22,7 @@ def and_there_are_schools_with_future_sessions
       create(
         :session,
         location: @school_with_future_session,
-        dates: [Date.tomorrow],
+        date: Date.tomorrow,
         programmes: [@programme]
       )
 
@@ -32,7 +32,7 @@ def and_there_are_schools_with_future_sessions
       create(
         :session,
         location: @school2_with_future_session,
-        dates: [Date.tomorrow],
+        date: Date.tomorrow,
         programmes: [@programme]
       )
 
@@ -42,7 +42,7 @@ def and_there_are_schools_with_future_sessions
       create(
         :session,
         location: @school_without_future_session,
-        dates: [Date.yesterday],
+        date: Date.yesterday,
         programmes: [@programme]
       )
   end
diff --git a/spec/features/cli_stats_organisations_spec.rb b/spec/features/cli_stats_organisations_spec.rb
index d32f8cca25..4c33d250e2 100644
--- a/spec/features/cli_stats_organisations_spec.rb
+++ b/spec/features/cli_stats_organisations_spec.rb
@@ -112,8 +112,9 @@ def given_organisation_has_complete_data_with_filters
       create(
         :session,
         team: @team_a,
-        academic_year: (Date.current.year - 1),
-        programmes: [programme_flu]
+        academic_year: AcademicYear.current - 1,
+        programmes: [programme_flu],
+        date: (AcademicYear.current - 1).to_academic_year_date_range.end
       )
 
     patient_year_8 = create(:patient, team: @team_a, year_group: 8)
diff --git a/spec/features/hpv_vaccination_offline_spec.rb b/spec/features/hpv_vaccination_offline_spec.rb
index 8703966734..fb874abc10 100644
--- a/spec/features/hpv_vaccination_offline_spec.rb
+++ b/spec/features/hpv_vaccination_offline_spec.rb
@@ -1,9 +1,11 @@
 # frozen_string_literal: true
 
 describe "HPV vaccination" do
-  scenario "Download spreadsheet, record offline at a school session, upload vaccination outcomes back into Mavis" do
-    travel_to(Time.zone.local(2024, 2, 1, 12, 0, 0))
+  around do |example|
+    travel_to(Time.zone.local(2024, 2, 1, 12)) { example.run }
+  end
 
+  scenario "Download spreadsheet, record offline at a school session, upload vaccination outcomes back into Mavis" do
     stub_pds_get_nhs_number_to_return_a_patient
 
     given_an_hpv_programme_is_underway
@@ -22,8 +24,6 @@
   end
 
   scenario "Download spreadsheet, record offline at a clinic, upload vaccination outcomes back into Mavis" do
-    travel_to(Time.zone.local(2024, 2, 1, 12, 0, 0))
-
     stub_pds_get_nhs_number_to_return_a_patient
 
     given_an_hpv_programme_is_underway(clinic: true)
@@ -355,6 +355,8 @@ def when_i_record_vaccination_outcomes_to_the_spreadsheet_and_export_it_to_csv
   end
 
   def and_i_upload_the_modified_csv_file
+    travel 1.minute
+
     visit "/"
 
     click_on "Import", match: :first
diff --git a/spec/forms/triage_form_spec.rb b/spec/forms/triage_form_spec.rb
index 28ea502cd6..0933b466ac 100644
--- a/spec/forms/triage_form_spec.rb
+++ b/spec/forms/triage_form_spec.rb
@@ -16,12 +16,7 @@
     it { should_not validate_presence_of(:notes) }
     it { should_not validate_presence_of(:vaccine_methods) }
     it { should validate_length_of(:notes).is_at_most(1000) }
-
-    it do
-      expect(form).to validate_inclusion_of(:add_psd).in_array(
-        [true, false]
-      ).allow_nil
-    end
+    it { should allow_values(true, false).for(:add_psd) }
   end
 
   describe "when the patient is safe to vaccinate for HPV" do
diff --git a/spec/lib/reports/careplus_exporter_spec.rb b/spec/lib/reports/careplus_exporter_spec.rb
index 629eaf7d7c..9866d211f5 100644
--- a/spec/lib/reports/careplus_exporter_spec.rb
+++ b/spec/lib/reports/careplus_exporter_spec.rb
@@ -11,6 +11,8 @@
     )
   end
 
+  around { |example| travel_to(Date.new(2025, 8, 31)) { example.run } }
+
   let(:academic_year) { AcademicYear.current }
 
   shared_examples "generates a report" do
diff --git a/spec/lib/reports/systm_one_exporter_spec.rb b/spec/lib/reports/systm_one_exporter_spec.rb
index 693e976394..72d901bd61 100644
--- a/spec/lib/reports/systm_one_exporter_spec.rb
+++ b/spec/lib/reports/systm_one_exporter_spec.rb
@@ -5,6 +5,8 @@
 
   before { vaccination_record }
 
+  around { |example| travel_to(Date.new(2025, 8, 31)) { example.run } }
+
   let(:csv) do
     described_class.call(
       team:,
diff --git a/spec/lib/stats/consents_by_school_spec.rb b/spec/lib/stats/consents_by_school_spec.rb
index d2b486874d..862cb89968 100644
--- a/spec/lib/stats/consents_by_school_spec.rb
+++ b/spec/lib/stats/consents_by_school_spec.rb
@@ -31,21 +31,20 @@
           team: team,
           location: school,
           programmes: [programme_flu],
-          academic_year: academic_year,
+          academic_year:,
           send_consent_requests_at: 10.days.ago
         )
       end
 
-      let!(:patient) { create(:patient, team: team) }
-      let(:patient_session) do
-        create(:patient_session, session: session, patient: patient)
-      end
+      let!(:patient) { create(:patient, team:) }
+      let(:patient_session) { create(:patient_session, session:, patient:) }
 
       let(:consent) do
         create(
           :consent,
           :given,
-          patient: patient,
+          patient:,
+          academic_year:,
           programme: programme_flu,
           submitted_at: 8.days.ago,
           created_at: 8.days.ago
@@ -92,7 +91,7 @@
         described_class.new(
           teams: [team],
           programmes: [programme_flu],
-          academic_year: academic_year
+          academic_year:
         )
       end
 
@@ -100,10 +99,10 @@
         create(
           :session,
           date: Date.new(AcademicYear.current, 12, 15),
-          team: team,
+          team:,
           location: school,
           programmes: [programme_flu],
-          academic_year: academic_year,
+          academic_year:,
           send_consent_requests_at: Date.new(AcademicYear.current, 12, 1)
         )
       end
@@ -112,10 +111,10 @@
         create(
           :session,
           date: Date.new(AcademicYear.current, 11, 15),
-          team: team,
+          team:,
           location: school,
           programmes: [programme_hpv],
-          academic_year: academic_year,
+          academic_year:,
           send_consent_requests_at: Date.new(AcademicYear.current, 11, 1)
         )
       end
@@ -143,7 +142,7 @@
       let!(:current_year_session) do
         create(
           :session,
-          team: team,
+          team:,
           location: school,
           programmes: [programme_flu],
           academic_year: current_year
@@ -154,7 +153,7 @@
         create(
           :session,
           date: Date.new(AcademicYear.current - 1, 12, 15),
-          team: team,
+          team:,
           location: school,
           programmes: [programme_flu],
           academic_year: previous_year
@@ -192,7 +191,8 @@
         create(
           :consent,
           :given,
-          patient: patient,
+          patient:,
+          academic_year:,
           programme: programme_flu,
           submitted_at: 8.days.ago,
           created_at: 8.days.ago
@@ -203,7 +203,8 @@
         create(
           :consent,
           :given,
-          patient: patient,
+          patient:,
+          academic_year:,
           programme: programme_hpv,
           submitted_at: 6.days.ago,
           created_at: 6.days.ago
diff --git a/spec/lib/status_generator/consent_spec.rb b/spec/lib/status_generator/consent_spec.rb
index bfe106d243..5661ebb294 100644
--- a/spec/lib/status_generator/consent_spec.rb
+++ b/spec/lib/status_generator/consent_spec.rb
@@ -129,6 +129,7 @@
           :refused,
           patient:,
           programme:,
+          academic_year: AcademicYear.current,
           created_at: 1.day.ago,
           submitted_at: 2.days.ago
         )
@@ -137,6 +138,7 @@
           :given,
           patient:,
           programme:,
+          academic_year: AcademicYear.current,
           created_at: 2.days.ago,
           submitted_at: 1.day.ago
         )
diff --git a/spec/lib/status_generator/registration_spec.rb b/spec/lib/status_generator/registration_spec.rb
index a21a52516e..a6aa1b61e7 100644
--- a/spec/lib/status_generator/registration_spec.rb
+++ b/spec/lib/status_generator/registration_spec.rb
@@ -12,6 +12,8 @@
     )
   end
 
+  around { |example| travel_to(Date.new(2025, 8, 31)) { example.run } }
+
   let(:programmes) do
     [create(:programme, :menacwy), create(:programme, :td_ipv)]
   end
diff --git a/spec/lib/vaccination_notification_criteria_spec.rb b/spec/lib/vaccination_notification_criteria_spec.rb
index 5c0fa6e57c..4a92f709ce 100644
--- a/spec/lib/vaccination_notification_criteria_spec.rb
+++ b/spec/lib/vaccination_notification_criteria_spec.rb
@@ -7,7 +7,13 @@
     let(:programme) { build(:programme) }
     let(:patient) { create(:patient) }
     let(:vaccination_record) do
-      build(:vaccination_record, patient:, programme:, session:)
+      build(
+        :vaccination_record,
+        patient:,
+        programme:,
+        session:,
+        performed_at: Date.new(2025, 2, 1)
+      )
     end
     let(:session) { create(:session, programmes: [programme]) }
 
@@ -53,6 +59,7 @@
             :self_consent,
             patient:,
             programme:,
+            submitted_at: Date.new(2025, 1, 1),
             notify_parents_on_vaccination: false
           )
         end
@@ -66,6 +73,7 @@
             :consent,
             patient:,
             programme:,
+            submitted_at: Date.new(2025, 1, 1),
             notify_parents_on_vaccination: nil
           )
         end
diff --git a/spec/models/draft_vaccination_record_spec.rb b/spec/models/draft_vaccination_record_spec.rb
index dc67d4c4b8..0f48f7ca9e 100644
--- a/spec/models/draft_vaccination_record_spec.rb
+++ b/spec/models/draft_vaccination_record_spec.rb
@@ -70,7 +70,7 @@
         )
       end
 
-      around { |example| freeze_time { example.run } }
+      around { |example| travel_to(Date.new(2025, 8, 31)) { example.run } }
 
       before { draft_vaccination_record.wizard_step = :date_and_time }
 
diff --git a/spec/models/immunisation_import_row_spec.rb b/spec/models/immunisation_import_row_spec.rb
index 43e4c992c4..f21e6212a1 100644
--- a/spec/models/immunisation_import_row_spec.rb
+++ b/spec/models/immunisation_import_row_spec.rb
@@ -299,9 +299,11 @@
       before { immunisation_import_row.valid? }
 
       context "when importing for an existing session" do
+        around { |example| travel_to(Date.new(2025, 9, 1)) { example.run } }
+
         let(:data) do
           {
-            "DATE_OF_VACCINATION" => "#{AcademicYear.current}0901",
+            "DATE_OF_VACCINATION" => "20250902",
             "SESSION_ID" => session.id.to_s
           }
         end
diff --git a/spec/models/immunisation_import_spec.rb b/spec/models/immunisation_import_spec.rb
index 1bcd38ffd0..2867299171 100644
--- a/spec/models/immunisation_import_spec.rb
+++ b/spec/models/immunisation_import_spec.rb
@@ -78,6 +78,8 @@
   describe "#parse_rows!" do
     before { immunisation_import.parse_rows! }
 
+    around { |example| travel_to(Date.new(2025, 8, 1)) { example.run } }
+
     context "with valid Flu rows" do
       let(:programmes) { [create(:programme, :flu_all_vaccines)] }
       let(:file) { "valid_flu.csv" }
@@ -128,6 +130,8 @@
   describe "#process!" do
     subject(:process!) { immunisation_import.process! }
 
+    around { |example| travel_to(Date.new(2025, 8, 1)) { example.run } }
+
     context "with valid Flu rows" do
       let(:programmes) { [create(:programme, :flu_all_vaccines)] }
       let(:file) { "valid_flu.csv" }
diff --git a/spec/models/patient/consent_status_spec.rb b/spec/models/patient/consent_status_spec.rb
index d5b87efeb9..064d454447 100644
--- a/spec/models/patient/consent_status_spec.rb
+++ b/spec/models/patient/consent_status_spec.rb
@@ -183,6 +183,7 @@
           :refused,
           patient:,
           programme:,
+          academic_year: AcademicYear.current,
           created_at: 1.day.ago,
           submitted_at: 2.days.ago
         )
@@ -191,6 +192,7 @@
           :given,
           patient:,
           programme:,
+          academic_year: AcademicYear.current,
           created_at: 2.days.ago,
           submitted_at: 1.day.ago
         )
diff --git a/spec/models/patient_session/registration_status_spec.rb b/spec/models/patient_session/registration_status_spec.rb
index 40f8f1c4a3..e14021b812 100644
--- a/spec/models/patient_session/registration_status_spec.rb
+++ b/spec/models/patient_session/registration_status_spec.rb
@@ -22,6 +22,8 @@
     build(:patient_session_registration_status, patient_session:)
   end
 
+  around { |example| travel_to(Date.new(2025, 8, 31)) { example.run } }
+
   let(:programmes) do
     [create(:programme, :menacwy), create(:programme, :td_ipv)]
   end
diff --git a/spec/models/pre_screening_spec.rb b/spec/models/pre_screening_spec.rb
index 82c6c812e2..620067a166 100644
--- a/spec/models/pre_screening_spec.rb
+++ b/spec/models/pre_screening_spec.rb
@@ -47,6 +47,8 @@
       end
 
       context "with an instance for yesterday" do
+        around { |example| travel_to(Date.new(2025, 8, 31)) { example.run } }
+
         let(:session_date) { create(:session_date, value: Date.yesterday) }
         let(:pre_screening) { create(:pre_screening, session_date:) }
 
diff --git a/spec/models/session_date_spec.rb b/spec/models/session_date_spec.rb
index 70bc81bab2..d4ae33e676 100644
--- a/spec/models/session_date_spec.rb
+++ b/spec/models/session_date_spec.rb
@@ -19,7 +19,7 @@
 describe SessionDate do
   subject(:session_date) { build(:session_date, session:, value:) }
 
-  let(:session) { create(:session, academic_year: 2024) }
+  let(:session) { create(:session, :unscheduled, academic_year: 2024) }
   let(:value) { Date.current }
 
   describe "validations" do
diff --git a/spec/policies/session_attendance_policy_spec.rb b/spec/policies/session_attendance_policy_spec.rb
index fb947bee12..47fb584ee9 100644
--- a/spec/policies/session_attendance_policy_spec.rb
+++ b/spec/policies/session_attendance_policy_spec.rb
@@ -59,6 +59,8 @@
     context "with session attendance and both vaccination records from a different date" do
       let(:session_attendance) { build(:session_attendance, patient_session:) }
 
+      around { |example| travel_to(Date.new(2025, 8, 31)) { example.run } }
+
       before do
         programmes.each do |programme|
           create(