B&Q lead time for providing kitchens and bathrooms stuff is very very long IMO. I was looking at the bathroom few weeks ago, and got quoted 12/14 weeks for delivery. Most other shops i went to had a delivery lead time of 3 to 5 days.
On Sat, i was looking for a solder copper elbow. They were out-of-stock and the guy told me if will be Feb by the time they get some more in!!!
B&Q is OK if it is available in their shop and you can get it straight away, otherwise go somewhere else.
Also, i do not find B&Q particularly competitive on bathroom prices.
And on kitchen prices, they have a permanent all-year-around special offer on doors only. It looks to me that if they want to sale something for €10, they put a label for €20 RRP with discount of 50%.