Only filter is the coin trap in the drum to pump hose.
This being blocked would cause the machine not to pump out. If your leak appears towards the rear of the machine, my money would be on a leaking pump. This is readily obtainable from any of the online spares wholesalers, bit shop around as prices vary greatly. About £17 would be good.
Remove the back panel and for safety's sake take off the belt and run the machine on a rinse and spin you'll be able to see the pump and if water is coming from it.
OJ, September 2011
