has issues

frontend/src/i18n/locales/en.ts

@@ -712,6 +712,14 @@ const en = {
     bestCaseTitle: 'Best case travel time',
     bestCaseDesc:
       'Uses the fastest realistic journey time (if you time your departure well and catch good connections). The default uses the <strong>median</strong>, representing a typical journey regardless of when you leave.',
+    noChange: 'No change',
+    noChangeTitle: 'No-change journeys only',
+    noChangeDesc:
+      'Restricts to journeys with <strong>no transfers</strong> —walk, board one transit service, then walk to the destination. Useful when you want a single straight-through commute.',
+    noBuses: 'No buses',
+    noBusesTitle: 'Excluding buses',
+    noBusesDesc:
+      'Drops bus services from the allowed transit modes —<strong>rail, tube, tram and ferry only</strong>. Helpful for filtering to journeys that avoid traffic delays.',
     previewOnMap: 'Preview on map',
     stopPreviewing: 'Stop previewing',
     removeTravelTime: 'Remove travel time',
@@ -783,6 +791,7 @@ const en = {
     type: 'Type:',
     builtForm: 'Built form:',
     tenure: 'Tenure:',
+    withinConservationArea: 'Within conservation area:',
     floorArea: 'Floor area:',
     rooms: 'Rooms:',
     built: 'Built:',
@@ -792,6 +801,9 @@ const en = {
     epcPotential: 'EPC potential:',
     renovations: 'Renovations',
     perSqm: '/m²',
+    historyTitle: 'History',
+    historySale: 'Sale',
+    historyBuilt: 'Built',
     searchPlaceholder: 'Search by address or postcode...',
     propertyData: 'Property Data',
     propertyDataDesc:
@@ -1095,6 +1107,14 @@ const en = {
     dsTowOrigin: 'Forest Research / Defra NCEA',
     dsTowUse:
       'Tree canopy polygons for lone trees, groups of trees, and small woodlands in England. Used here to estimate tree coverage percentiles around postcode centroids.',
+    dsConservationAreasName: 'Historic England Conservation Areas',
+    dsConservationAreasOrigin: 'Historic England and local planning authorities',
+    dsConservationAreasUse:
+      'Designated conservation area boundaries for England. Used to flag whether a postcode representative point falls within a conservation area.',
+    dsListedBuildingsName: 'Historic England Listed Buildings',
+    dsListedBuildingsOrigin: 'Historic England National Heritage List for England',
+    dsListedBuildingsUse:
+      'Listed-building point records for England. Used to flag properties whose address appears to match a nearby listed-building entry.',
     dsNaptanName: 'NaPTAN (Public Transport Stops)',
     dsNaptanOrigin: 'Department for Transport',
     dsNaptanUse:
@@ -1135,6 +1155,7 @@ const en = {
     faqWhyTitle: 'Why Perfect Postcode',
     faqPricingTitle: 'Access',
     faqTipsTitle: 'Map Tips',
+    faqBehindDataTitle: 'Behind The Data',
     // FAQ items — Finding Your Area
     faqFinding1Q: 'Where should I look once the obvious areas are too expensive?',
     faqFinding1A:
@@ -1234,6 +1255,26 @@ const en = {
     faqTips3Q: 'How do I refresh the map colours?',
     faqTips3A:
       'When a feature is colouring the map, use Reset colour scale in the map legend to refresh the colours for the results you’re looking at now. This is useful after moving the map, zooming, or changing filters.',
+
+    // FAQ items — Behind The Data
+    faqBehindData1Q: 'Why does an airport sometimes look quieter than the streets around it?',
+    faqBehindData1A:
+      'The noise figure shown for a postcode is the loudest of three Defra sources — road, rail, and aircraft — modelled at 4m above ground as a 24-hour weighted average (Lden). On a busy residential street the road component dominates, typically 65–75 dB. Inside an airport perimeter there are no major public roads, so the road term drops and only the aircraft average is left. London City Airport has a curfew and limited movements, so its 24-hour aircraft Lden is moderate (around 60–66 dB at the runway), and the airfield ends up looking quieter than the A-roads that flank it. The same effect appears at Heathrow. It’s a real artefact of measuring transport noise at residential receptor height, not a bug.',
+    faqBehindData2Q: 'Why does the airport, motorway or park show up as one big shape?',
+    faqBehindData2A:
+      'Postcodes don’t officially have boundaries in the UK — Royal Mail defines a postcode as a list of delivery addresses, not as an area. Perfect Postcode synthesises the polygons by giving each address its share of the surrounding land. Places with no addresses, such as a runway, motorway carriageway, park or reservoir, get filled in by whichever nearby residential postcode is closest. That is why an airport or open space often appears as a single large polygon rather than many small ones, and the value shown for that polygon comes from the handful of postcodes that happen to sit inside the perimeter.',
+    faqBehindData3Q: 'Why do nearby postcodes share the same crime numbers?',
+    faqBehindData3A:
+      'Police-recorded street-level crime is published at LSOA level — small neighbourhood areas of about 1,500 residents. Every postcode inside the same LSOA inherits the same yearly totals, so a quiet residential street and a high street one block over can show identical figures if they fall on the same side of the boundary. Per-capita rates can also look unusually high in postcodes covering hospitals, university campuses or industrial estates, because those areas record incidents normally but have very few residents on paper to divide the count across.',
+    faqBehindData4Q: 'Does "Good schools within 2km" mean my child can attend them?',
+    faqBehindData4A:
+      'No. The count looks for state schools whose own postcode falls inside a circle around your postcode’s centroid. Catchment areas, faith and selection criteria, sibling priority and admission rules are not modelled — a Good or Outstanding school nearby may still be unreachable from your address. Use the count to compare areas, then confirm actual admissions with the school or local authority before relying on it for a decision.',
+    faqBehindData5Q: 'Why does a postcode show "Gigabit" when not every home has fibre?',
+    faqBehindData5A:
+      'Broadband coverage from Ofcom Connected Nations is reported per postcode as the percentage of premises that can get each speed tier. We display the highest tier with any availability, so a postcode where even one home can reach Gigabit reads "Gigabit available". It is the right answer for "is full-fibre on this street at all?", but does not guarantee every flat in a block can be ordered today. Always verify with the providers for your specific address before signing.',
+    faqBehindData6Q: 'Why don’t the public-transport times change for evenings or weekends?',
+    faqBehindData6A:
+      'Transit times are computed once per destination for a Tuesday morning departure window (07:30–08:30) using full GTFS timetables. The "normal" figure is the median journey in that window, and "best case" is the 5th percentile. Off-peak, late-night and weekend services are not modelled, so a postcode that only has a peak-only bus can still look transit-good on the map. Treat the numbers as a weekday commute proxy rather than an all-day estimate.',
   },
 
   // ── Account Page ───────────────────────────────────
@@ -1385,6 +1426,8 @@ const en = {
     'Potential energy rating': 'Potential energy rating',
     'Interior height (m)': 'Interior height (m)',
     'Street tree density percentile': 'Street tree density percentile',
+    'Within conservation area': 'Within conservation area',
+    'Listed building': 'Listed building',
 
     // ─ Feature names (Transport) ─
     'Travel time to nearest train or tube station (min)':