Do London Metropolitan Police have mobile speed camera vans?

most police forces have the same ways of catching speeders by using camera vans and cars. but more importantly they can use unmarked cars and here in uk most police cars have cameras in them. if not pulled or caught at the time don't worry unless u been can by a speed camera if you have they have 14 days to send a notice of intent to registered keeper and if you still haven't hear you are fine.