Motorway fork sign
A blue sign with a diagram showing a branch off the road ahead and the following text.
Forward destinations: The SOUTH WEST; Bristol, Stroud.
Exit destinations: Cheltenham; Gloucester; Staverton [Airport symbol]; A40 [Solid triangle diversion symbol] [Hollow circle diversion symbol].
Junction number: 11.
A left turn here will get you to GCHQ’s donut-shaped offices. If you don’t want them to listen to your thoughts as you pass, you might want to get your tinfoil helmet out of the glove compartment, at least until we’re clear of Gloucestershire.