Sadly whilst I am of the age who regrets this, she was never in the running for it...the line running through the programme was that it would be the lowest scoring contestants but it was pretty fake and I think everyone knew it would be Jimmy Carr!
As a side note, pretty sure that's Leon's tank, with added decoration...so not so much of a replica
Another massive disappointment once was on Sing if you can with Keith Lemon. Gemma Merna (ex of Hollyoaks) was one of two candidates to get messed up, and ended up being some bloody bloke instead...