I try very hard never to give money to Halfrauds. So, I was delighted to find that Wurth now has trade stores in Glasgow
http://www.wurth.co.uk/75, Paisley and Wishaw.
They are brilliant for Land Rover-ish things like nuts and bolts, washers, fixings, spire clips and rivets as they carry a huge range. Also top for consumables that they (a little chillingly) call technical chemicals - lots of harder to find stuff like zinc spray or battery terminal grease.
It is slightly annoying that nothing is priced - you have to submit a list and they look them up - but the prices, when you do find out, are pretty reasonable.
The one in Glasgow is run but a nice chap called Frank. Tell him Kathy sent you.