Cyclists on roundabouts

Be particularly careful when approaching a roundabout.
Be aware that drivers may not see you easily.
Watch out for vehicles crossing your path as they leave or enter the roundabout.
Take extra care when cycling across exits.
Give plenty of room to long vehicles on the roundabout, as they need more space. Do not ride in the spaces they need to use to get around the roundabout. Be aware of the driver's blind spots. If you can't see the driver, they can't see you. Indeed, it may be safer to wait until they have cleared the roundabout before you go on it.

Image shows a cyclist moving around a roundabout, staying tight to the outside of the circle, using hand signals where appropriate