I already know about Maplins, they are very expensive, most of the items in Maplins product line I have been able to source cheaper off places like Ebay. I bought an SD card from an online supplier for £4.99 that was on sale in Maplins for £12.99, same make, spec and manufacturer. Just one example, generally I find them to be 4 to 5 times more expensive than the actual products worth.
What I am after is a supplier that supplies items cheaply as I am unemployed, have very little money to fund a project off my own back and any items need to be compatible with Arduino's IDE.