How much does the average male underwear model make in the uk?

Not to try and sound cocky but im an amazing looking lad with a great body. I work out 5/6 days a week and av got a six pack, nice pecs and all the rest of it. I think id make a great male underwear model and wondering what the pay is like, how long do shoots usually last, are you required to travel a lot, where is the best place to find work etc. ps. i live in newcastle