By Julia Banim James Martin once regarded James Bond producer Barbara Broccoli as the love of his life. After recently splitting from his girlfriend of 12 years, Louise Davies, the TV chef has reportedly now moved on with personal trainer Kim Johnson, with the pair spotted looking at watches at a Mayfair shop over the weekend. It’s unlikely, however, that James will ever forget his early romance with Barbara, a powerful woman 12 years his senior who ‘won’ him at an auction in 2001, and paid a staggering £18,000 for him to cook her dinner. At the time, James, then 29, was a rising star on the c…