Irfan,
If your rifle has iron sights please reconsider before your armorer/gunsmith removes them to install scopes. From Amazon or Cabelas you can order fairly decent "bridge" style mounts that allow you to use both the scope and the iron sights depending on your choice and light conditions. My Savage 110 rifle is fitted that way.
I have a Nikon Buckmaster scope on my Savage 110 which I got for around $125. It works great and I have used it for 3 seasons now and it is as accurate as ever. I take good care of it, always using the lens caps when not in use and cleaning it.
I don't know if you have pawn shops in UK and if they are allowed to sell guns. You can get a very good deal at a pawn shop, if you haggle a bit.
Once again be absolutely certain the rifle is functioning perfectly, and also the rifle is from a registry where the previous owner is known.
Have you checked out Baikal .22 LR bolt action magazine rifles? These are the "AK"s of .22LR rifles made in Russia. Plain bolt action rifles 10 shot magazine but fantastically reliable and accurate, at a rock bottom price of $90-100.
May need gunsmith work for mounting of scope.
More on scopes. I use a Prostaff scope on my shotgun rifled barrel and it is dead accurate. The shotgun of course doesn't need bridge mounts.
Best of luck on your mountain cabin. I am sharing a hunting club cabin at the moment but I plan to get a shack myself; made from a non-functional caravan.