Yesterday, whilst I was in MK, I noticed a new speed camera, the Truvelo type in the style of a lamp post, right in between real lamp posts and a set of traffic lights. Its blends right in with the lamp posts. So be careful.
Its on H10 Bletcham way - from the A5 roundabout as you are heading towards Ikea/Asda and its the first set of lights you come to.
just thought I would mention this.