As far as I know Quality garden tools are the cheapest for Bulldog tools, they're Bulldog's main supplier. Heres the link to their website - http://www.qualitygardentools.com/ Go onto Bulldog's site and pick which one you want then phone Quality garden tools with the one you want and they'll sort you out with it. I've ordered off them... good service!
Me & my digging mate bought a silverline round mouth shovel each, at the start of last season... the 2 of them broke. Crap!
There the job mate cracker tools