Hi, I'm coming into Farringdon on a southbound Thameslink train, and would like to transfer to the Elizabeth Line. When I tried this before, I was unable to find a place to tap-in to get the contactless TfL fare at the Thameslink platform level. I found a lift going down to the Elizabeth line, but then there were no tap-in places down there, and the staff said I had to go up the escalators to the higher level to tap in, and then come back down. I'm sure there must be a better way to do this. I have a fair bit of luggage so prefer to use the lifts if possible. Is there somewhere I can tap in before I get in the lift? I want to go to Heathrow and then come back into central London and use the tube off and on for the rest of the day, including the Elizabeth line back to Heathrow in the end, so I assumed that contactless would be the best way to get a daily capped fare? I have already bought my rail tickets only as far as Farringdon. Thanks for the advice.