Wow, massive thanks to all of you, great suggestions, firstly no I was not being a smart .... I was however talking about the cops, thanks to those who picked up on that.
Alright I went to my local tyre place they were ridiculously helpfull and actually found out that the rolling diameter is SMALLER than the stock wheels (Believe it or not)
So we were confident that they will pass the blue slip with the right eveidence, however the exhaust not to good, because it is lowered they wont just cut and re weld unfortunatly BUT I have been given a number for an engineers cert, so I will most lileky go through the pain of that spend some cash on the height and also the wheels just in case of being pulled over again.
Thanks Again all.