has the company name and the BS number on. so from them aspects yes, not sure about the 3d effect letters and honeycombe etc. but if there made to the BS as it says then yes they are legal.(also I believe Halfords do 3d effect lettering and carbon fibre effect lettering so thinking about it you are proberbly ok having 3d effect lettering etc)
however why get 3d effect chavvy looking plates when you can get pressed plates for not much more.
look much better IMO and less chavtastic.