Gulfstream IV in trouble over Bristol?

Not really sure what it's doing, but appears to be circling over Frenchay/Filton with it's gear up and flaps down, possibly burning off fuel. Has been doing so for about an hour now, at quite a low altitude (less than about 2000ft I would say.....certainly much lower than the traffic going into Bristol.)
All taken from my back garden.....

Any ideas what's going on?
.mic
All taken from my back garden.....



Any ideas what's going on?
.mic