Originally Posted by CJL
Speed - well topped out at about 10knots at one point but really should be doing 8kt.
Er.... I think you'll find the speed limit is 8 Kilometres per hour, (which is about 4-5ish knots) They are very hot on it too - especially in a RIB!
There are several other slipways in the area. Cookham near the bridge. Aston near Henley has one down a narrow lane but the best around here, though a bit away from where you were is down the side of Windsor Leisure Pool. Concrete, purpose built, free trailer parking and lots of (paid) car parking.
Glad you had a good time. I always have a Thames trip at the end of the season to de-salt!