I felt exactly the same last Tuesday when I went along to my 1st ever body pump class. The instructor was really nice and he made sure I knew what I needed and made it clear that I should only do what I felt comfortable doing. The other members helped out a lot too as it was clear I was a newbie hahaha! I thought that loads of people would be looking at me and I'd be doing it all wrong, but no one did

The instructor helped by giving me tips etc whilst I was going through it, i.e. slow it down here, hold the bar here etc etc. I say go for it!!!! x x
Thank you Kayley, that's really helped as I felt exactly the same!
Definitely give it a go! I don't know why so many people say they feel embarrassed about going to something new, everyone had to start somewhere and everyone is looking at the instructor rather than other people in the class! Pump is probably JJB's own version of Les Mills body pump, my friend was a member a JJB a while ago and I seem to remember from looking at her timetable that JJB don't have the Les Mills licence but do their own thing. I don't think the Les Mills website is all that up to date btw, my gym has been licenced for pump and combat for about 5 years but it's never appeared on their search facility. If your instructor is any good you'll be made to do the technique session as soon as s/he spots that you're new - that's how it works in my gym, the 'technique session' is listed on the timetable but in practice it's just the instructor grabbing any newbies before the class and giving them a quick run-through while everyone else is setting up. Since you do weights anyway you'll be fine, the main difference is that it will probably take a little trial and error to suss out suitable weights that are heavy enough to benefit you but light enough to keep going for each track - remember you're not just doing 3 x 12 reps but keeping going for a whole song! Don't worry too much about that for your first go though, just concentrate on getting the technique right at first. Gwan, gwan, give it a try!
Also very helpful! The Technique class is on a Saturday and I'm seeing PT on Saturday so I'll book for the class on the Following Saturday. Apparently they used to do the Les Mills ones but now the description just says something about worldwide something or other, but I suppose if it was Les Mills they would have to say - anyway that's not so important I was just curious!