Then this morning coming into work it was fine until I hit traffic then the temp went right up as I stopped and the red stop light came on, although the water temperature stayed low. I had to keep stopping to let the temp come down, but oddly when I pulled away again it dropped down to about 70-80 until I hit more traffic, is this just a coincidence?
I could try re-bleeding it again. Could it be a problem with something else, thermostat, water pump, air getting into the system?
"Edit: I have just found out the thermostat and water pump have only done 2000 miles so they should be fine."