B&Q have been pushing the tiles Graces Dad was on about on adverts and at the front of their tile section.600=600 black polished porcelain,must say they look great.I was picking some battons up the other day and had a look at them while someone else was looking at them,he saw my tiling t-shirt and asked what I thought.I said"£11.45 a square metre for those tiles,I'll show you why their that price." I opened a box(naughty,naughty) and got the first 2 tiles out and put them next to each other on the floor one was 599 the other 596.All 4 sizes were different. Put the bloke right off.One off the staff saw me and told me off.I said loudly in front of alot of people that they were only good for hardcore.
The tiles looked great but whats the point if when there laid all the joints are out of line.You can't get quality at that price unfortunately.
If you do have to lay them use a big grout joint,its very rare to get B&Q tiles the same size even in the same box.
Good luck you'll need it.