I actually got 6 panels delivered today, they are cut perfectly. Unfortunately they are gloss white and I asked for frost white so these are no good, I have asked for them to be replaced.
I ordered 3 full base pieces, with 4 screw holes and 3 small feet pieces with 8 screw holes.
If there is no problem with the replacement they should be 4GBP + Postage.
5mm gloss white image below.