I have a 03 plate 1.8 Focus. Approx 1 x week ago both of the brake lights (excluding the top centre brake light) stopped working. Shortly after the rear tail lights stopped working. I have checked the bulbs both of which are fine. This morning I re-seated the bulbs (both are positioned correctly) and the brake lights have started working again however the rear tail lights are still not working.
All other electrics within the car appear to be working OK.

Any help/suggested testing etc would be appreciated.