Thanks paperclip. I called them today and they seemed bewildered that i was booked onto a stage 3 on the 12th Feb at CTC as there isn't one being held on that date! They said it was a system error and said if i went back online i could choose some new dates just added. Now booked on 9th March at CTC. Good job i called and didn't just show up on the 12th
They also gave me details to arrange a Swanwick visit, but still want to try to visit the Heathrow tower as well if i can. If anyone knows a contact or number there please let me know. The HR lady said she didn't have any info on who to contact in Heathrow tower.