Water leaking from powder drawer?

Hi
We've got a WJD1667W washer dryer.
During a wash when the drum is full of water, lots of water begins to flow out of the powder drawer.
One error I've seen is E10 and my partner has possibly seen E2 on a previous occasion.
We started having problems last week when we washed some waterproof golf clothing, it appeared to be too heavy for the machine to cope with and we've had intermittant problems ever since with normal loads.
Any ideas?
Many thanks