Andy wrote:
I reckon the prices at B&Q are generally higher than at Focus. I
don't shop for DIY often so I can't tell how big the difference is.

Very approximately, how much more would I pay at my huge local B&Q
than at my much-smaller Focus?

Maybe there has been a price survey of DIY stores in a magazine.

I don't mind travelling to Focus to see if they have an item in stock
if the saving over B&Q's price makes it worth it.

Thank you for any info.

Use www.screwfix.com they always cheaper. Well, for me they have been.

:-)