Whilst wren kitchen units are great quality do not purchase your granite worktops from them as the company they use are useless and cancel your fitting dates as seems to be standard practice leaving you without a new fitting date and no useable kitchen . Our granite worktops arrived a week and a half later than booked and have a chip to one corner and also tram lines down the whole of the island worktop. Customer service from both Wren and J Rotherham who the use for worktops are just useless. You might as well bang your head against a brick wall .
You've been warned but don't take my word for it just look at the reviews for J Rotherham.