Turtle Wax cleaner & conditioner. Came out very well in a magazine test some time ago. I've also got a Connelly cleaner and conditioner, but find the Turtle Wax easier to apply with a nicer smell.
PS - just back from North Devon, and MrsW's birthday. The weather has been quite good. Sat in the sun in a sheltered spot in a T shirt on Friday afternoon. Got soaked on saturday afternoon on a long walk. Should have been better prepared!!!
Journey back today mostly dry except at the start.