I remember the day.....
I smoke 5 a day and was open and honest with them - they just suggested I packed up - no failure
Also - I have a big stomach, was sitting watching all the young guns coming in weighing 9 stone nothing and thinking "I am never going to pass this". Suddenly in walks a father christmas sized character (big red face) wihout the beard and on speaking to him find out his a commercial jet pilot.
He passed with no problems and so did I....
A lot of the Class 1 scare mongering is pure myth and comes from a smug few that have passed and want to scare others....
Really nice people and providing you are open and honest and of a reasonable fitness standard (ie you can walk) you will probably pass!
(Oh and have the big wallet of course!!!)