We've just changed the connection on all our taps at the lottie. The problem seemed to be that the inner part of the tap ( which should reach the rubber seal on the adapter ) is higher then the seat on new connectors so anyone buying a connector now has leaks. We added brass hozelock fittings to the taps which has done the trick. If anyone else is thinking of doing the ame, don't spend £5.99 at B & Q. We got them for £1.20 from an ironmonger.