Underground Ticketing System (UTS) cards in yellow were used from 1987 until 1993 when pale pink coloured cards replaced them. Decoding info centrally on the right hand side, machine series starting 01 upwards related to now-closed staffed Ticket Office windows; 10 onwards relate to self-service Fewfare machines; series 30 etc comprise a complex Multifare variant.
The Heathrow Terminal 4 02 - UTS London Underground ticket - Piccadilly Line would be most suitable for travelers with connections to the popular Piccadilly Line in London, particularly in Terminal 4 of Heathrow Airport.
