Dvla wouldn't remove the reg if it was the origional plate however if it was a private plate they could take the plate off you as you are not displaying it properly but wouldnt do that after 24 hours anyway.
As for the plate on the sierra the lettering isn't plain black as it should be, there looks like there's enough of a space between the Rs decal and the lettering so shouldn't be an issue on that part

[QUOTE=BIL N KEL;5833597]My brothers missus got pulled in her impreza P1 the other night for front number plate being too small. £60 fine for her! And told to get it changed within 24hrs or dvla would remove the reg from the car, resulting in her having to pay £700 to re-register the car