Maplin Electronics

Maplin is one of those stores where you can buy anything and everything you ever wanted o do with electrical components.
Maplin sell computer accessories as well as all the parts to go in them too.
They sell audio cables and connectors too. If you visit their online store you will see the vast amount of products available in your local store.
The store itself has a catalogue which allows you to have part numbers ready or have parts ordered in.
At the back of the store you will fin a handy counter where the technicians will quite literally be able to build your desired part if they dont sell it or if you need something special making up.
The only bad thing about the maplin chain is that they can be a tad expensive on some things, but you do get a professional service where the satff know what they are tlking about in all aspects of what they sell.