I think that Best Fittings would be your answer . they have all the filler fittings including theDaystate/ Ripley one > cheers HOLLY
PS they are on the internet
PSS if desperate . as you live in grays . if you go up the old london road under the dartford bridge . as you go past it after about half a mile on the right is a hydraulic fittings place in a small estate . they do all sorts of fittings ?