Depends on the year Richard!
Bumble has three screws - one also top centre.
Later cars from about 07 also have a fibre underboard which is held by half a dozen small screws into the base of the dash.
When I was chasing Bumble's electrical glitch I could get behind in less than ten minutes, but to remove completely take Richard's advice and take the wheel off, and if you have an adjustable column, drop it down. It's a piece of cake, really.
