It wouldn't surprise me as they're run by Mouchel who've been having a lot of problems for two years.I read somewhere recently that the cameras havent been working properly for the last 2 years. So no one has ever been fined by the cameras over the gantries in the last 2 years. Apparently they are currently updating but money has run out and for now, no fines.
Really? I see them flashing cars on the other side pretty much every time I use the m25 and have done since they installed them about ten years ago.I cover the M23 -> M4 stretch of the M25 in both directions pretty regularly, and I may, ahem, occasionally stray above 70mph. I've never had a ticket.
That said, I've never noticed a flash for me or any other motorist either.