Earlier this week Homebase announced they plan to have a 20% off all items in store all weekend (11-13th June). Details and voucher here:http://www.hotukdeals.com/item/694474/homebase-20-discount-voucher-11-13t
I remembered this deal I used to get a few presents before Christmas where B&Q pricematched and gave a further 10% off:http://www.hotukdeals.com/item/544947/bosch-100-piece-x-line-accessory-se
So I called my local B&Q and was advised that they probably would honour this however they hadn't released their weekend deals as yet. I was advised that evidence of the item would be required.
I then asked if all items are 20% in store at Homebase then surely a printout of the website will be enough? I was told yes that would be enough.
So over this weekend you could play the big two off against each other to get a filthy deal. B&Q may gazump it with a 20% of their own however you could still get a bargain by finding an item at Homebase that's reduced, apply the 20% and then go to B&Q and get them to match plus 10%.