https://www.coincorner.com/This one will let you buy bitcoin without the hassle of uploading tons of documents if you are a UK resident.
However check thoroughly the website and the reviews you find on google before making any purchase there. It is always recommended that the user always check thoroughly before buying, that's what I always do.
Also you can use bitpanda.com , it's in Austria but it lets residents from all over Europe to buy. And here only 1 email and sms verification is enough to let you buy up to 1000 Euro in bitcoin per day.
For the first website I don't offer any guarantee as I haven't used it personally but for the second I offer full guarantee as I have used it a dozen times so far.
Coincorner is again a pain, bitpanda is better but to buy coins using my credit/debit card i need to pass their gold verification.
That includes submitting my proof of address and everything online on a webcam.
Thanks for your help anyway!