As well as his interest in antiques (mainly ceramics & Art Nouveau) and collecting records and old sheet music, Chas devotes considerable time supporting The Grand Order Of Water Rats.  The G.O.W.R. is a show business charity promoting good works and good fellowship. Its members include many luminaries from the world of entertainment, notably; Roy Hudd, Bert Weedon, Brian May, Englebert Humperdink, Rick Wakeman, Joe Brown, Sir Henry Cooper, Sir John Mills, Jimmy Tarbuck, and Michael Crawford. Over the years, since its inception in 1889, many international stars have been privileged to be members; Laurel & Hardy, Will Hay, Ted Ray, Dan Leno, Bud Flanagan and in more recent times Frankie Vaughan, Les Dawson, John Inman, John Dankworth and Bob Hope.  There have only ever been 850 Water Rats since 1889, and never more than 200 at one time.

In 1980 Chas received the trophy as Rat Of The Year from the then King Rat, Henry Cooper.  December 2000 saw Chas inducted as Prince Rat for the year 2001. In 2003 he was elected King Rat and again in 2004.