TfL still uses UTS in modified form and hugely reduced quantities. Seven Sisters has/had. 01 02 10 11 12 30 in the "B" ticket office at the BR/National Rail entrance. Decoding vital info centrally on the right hand side: machine series starting 01 upwards related to staffed Ticket Office windows all now closed; 10 onwards relate to self-service Fewfare machines; 31 etc are more complex Multifare machines.
