If I lived locally Nemo, I would gladly come and take some party shots for you. I have stayed away from Wedding and Party shoots for some time but they are ok on occasion.
I do think you will struggle on the £100 marker. Maybe £150 would be your starting point to approach an ok photographer {student or part experienced} with no edits ot extras. Essentially you're just wanting a license for personal usage {aka the bare min service}.
Also, with regards students, I've always gone by the stance of ''just because you're starting out, doesn't mean you have to lower your starting price''. I've advised several on this, all about valuing your ability first - otherwise creates a cultures of an ever diminishing value, in what is already an industry that is often underappreciated. There's far too many trying to take advantage of younger people doing something for free or cheap beyond respect. It's a similar story with musicians and many other creative practices unfortunately.
Btw, I'm not saying that's you - you're clearly just trying to figure out someone who could provide to limited service you require and unknown of the price point. But yep, I'd maybe up it to around the £150 mark as I can see several asking for about £200. So there would possibly be a middle ground of anything from £160 - £180.
Finally, without exploiting someone younger/desperate for a gig, people will find that with photograph {in the main} it's very much a matter of you will get the service and quality that you pay for
There are folk on here who can vouch for some of my work and references elsewhere too but unfortunately I would possibly come in at a bit too high a price point I think
