hi all so Farringdon is not a London terminal for ticketing purposes - but the Key smartcard i have for my local station (hitchin) to 'london terminals' opens the gates. is this just an error in the gate software and I am risking a fine (for section of journey between st pancras and farringdon) or is it an allowed route/exit? for years I have walked from kings cross to office in farringdon, getting season ticket upgraded to farringdon as destination rather than kings cross/st pancras (i.e. london terminals) is another £1k, so I'm assuming software error. any thoughts?