You should not find this too difficult to sort out (at least partially) ---- I have had similar problems --- you may heve to do a bit of trial and error (I keep WordPad handy to check out the keys). On the far right of your screen at the bottom just to the left of the time & date you should see something like ENG US, which in my case stands for ENGLISH Language UK with a US Keyboard. Click on this and you get a list of the options currently available on your system. Click the one you want. I think like me you may have to opt for the US keyboard (as so many keyboards are) to get the right keys (but with UK English for language.) If you dont get the options you want, go to Languages in Settings. The language which is at the top of the list is the one that will be used, so if UK English is in second (or other) place click it and it should move to the top.
The one thing I cannot get is the £ sign. I dont have it on my KB and no other key such as $ will produce it. You may be OK with your Board. What I have done is go to the Character Map (Windows Accessories in All Apps) and selected the £,which copies it to the clipboard. Keep it somewhere handy,such as on a Sticky Note (I have a Gadget, Clipboarder, which keeps numerous clipboards indefinately). When you need a £ just copy and paste it, it takes only a couple of settings
I hope this is helpful. Iwould be interested to know how you got on.