I am pretty certain as mentioned above that there has to be a speed camera sign within one mile of any camera or mobile device, Really hope you hammer them, I got stopped the other week, 86mph in a 70 on dorchester bypass, Think he mainly saw me cos of my last minute squeeze past another clio when 2 lanes went into 1, pulled me but was really nice bloke, chatted about my mods, asked me why I was going so quick, I told him the truth, Hadnt seen my girlfriend for 3 and a half weeks, really missing her and was on way to see her! He laughed and just gavce me a producer and a little word of advice, io.e. I want to be in one piece when I arrive to have some good days (and nights he said with a wink) over the weekend!!
Coppers like that are ok, They understand what it is like! Not so worried about points anymore cos Liverpool victoria dont care!! They only care if you have been banned!!!
Good luck mate