Try
http://www.wrightsautosupplies.co.uk/
they do load os stuff in metric UNF UNC and all sorts of weird and wonderful nuts and bolts
I use them myself and highly recommend them
arrr ruthless friends ever one has them I have a mate who is famous for picking up stuff cheep or free and then selling it on at inflated prices to friends and even family members. Unfortunately some people have no consens when it comes to money.
Malta has that affect
I know i am a new comer but been a few times now and always want to go back,and have friends who have moved out there it a great country with great people