Hi,
If your after pots and other basic garden kit try Wilkinsons.
Much cheaper than garden centres / DIY chains and good quality kit.
Great if your still learning as I am. 20x 3.5" pots for 99p!! can't be bad.
Here's a link.
http://www.wilko.co.uk/stores
Just to confirm....I'm a bargain hunter and have no interest in promoting the Wilko group.
Kind Regards
Brian