Aye up bud,
Avoid the nuprol. They have a microswitch trigger but they don't protect it with a mosfet. Pretty much means if you don't add a mosfet with a rewire then it's the trigger that will fail, and that can be accelerated with lipo batteries that are almost industry standard.
Brands to look at would be:
JG, G&G, Specna Arms, Cyma.
Metal bodies are generally better than plastic ones, but the G&G CM Raider is a well respected plastic bodied gun.
Gearbox wise, Basic triggers have less issues than ETU triggers - And don't suffer with electronic failures, For a beginner gun you want either a basic trigger, or a basic trigger with mosfet protection. Anything more than that is an added cost and that money is better spent on getting the rest of your gear sorted.
https://www.patrolbase.co.uk/g-and-g-armament-combat-machine-cm16-carbine?pv=5071
As for playing in Yorkshire it'll depend on your location, Yorkshire is pretty big

. I live in Coventry now but come from York. There might be more sites locally if you give your nearest City.
If you have not done so already, Or have never looked into playing and owning/buying an airsoft gun you might want to have a look through the UKARA rules.
Loads of airsofters will go on their own. Once you get chatting you'll probably find everyone very friendly. Ask about the guns but don't touch unless you ask. Generally most airsofters think they have the best gear in the world, and love showing it off. Equally were all pretty invested in our gear and absolutely hate people just picking stuff up. So just like with any hobby talk and ask questions, even ask for a shoot.. The very worst someone will say is no.
Listen to the site marshalls, Ask a million questions, If they know you are new and alone most marshalls will help you a fair bit and give good advice on where to go on site, or who to talk to... They also generally keep all the hires together in a group, so even tho you might be alone, there is a good chance there will be a small group of hires that you will be a part of from the get go. Take sweets - Bribes work well, And take drinks because even if the site provides them you'll need a drink on the way home.