If you just wanted to get a heads up for flying a jet pre sim check or interview etc,you could try this place,its about £230 hr on their 737 sim,although they do offers on late notice slots.(they also have a F4 phantom sim in case you get a job offer for one of those!
http://www.realsimulation.co.uk/
Might be worth a go,if you take to it maybe do a couple of hours,if not then JOC could be for you since it would be more formal. Hope this helps I wanted to go as a chrimbo pressie,but no such luck.