1976 Heathrow Coach Ticket

I found this in the roofspace whilst laying additional insulation. Looks like the previous occupants had taken a trip back in June 1976 ( the year afer British Airways was formed from BEA and BOAC ). baw_heathrow_coach_ticket_1976_mod.jpeg

As best I can transcribe it:

     23 JE 1976      BRITISH      AIRWAYS      AIRPORT  COACH SERVICE       W.L.T.         TO      HEATHROW       AIRPORT          90P        ADULT  NOT TRANSFERABLE         ???  

WLT is the railway code for Wallington Station, SW6.