Motorway sliproad roundabout sign
A blue sign with a diagram showing a roundabout with an exit only to the left, and the following text.
Left turn destinations: Redhill; Gatwick [Airport symbol]; (A23) [Solid square diversion symbol].
Everything turns left here. If you're in the left lane you can bypass the roundabout altogether, but if you're in the right hand lane you'll need to give way before you can carry on.