Most independent tyre dealers will try there best to match on-line prices, but don't forget that tyres don't fit themselfs, someone has to get hands on.

I’ve used these guys before — their prices are quite reasonable compared to others, but you’ll need a friendly garage to handle the fitting.
Link

Old thread resurected, but buying tyres never goes out of style!

I've had great success with Asda tyres. They have arrangements with local fitters everywhere. Fitted prices unbeatable, I found.

Chris

Sadly, when my car went in for MOT, all four tyres had min 4mm tread, 3 failed on delamination to inner tyre wall, not spotted by me.
So all my research looking for cheapest new tyres went out the window, was then forced to purchase to pass the MOT, limited selection from a mobile guy I know, didn't have 4 Pirelli, so ended up with Continental, seem quietening though, £1080 later, do about 7500M/year, so should get 3-4 years.