Thanks guys.
The floor is dry except for a little dribble that possibly came out of the door when it first happened. Nothing since then.
I got the code 419 by turning the machine off, holding the start button down and turning the machine back on. The display shows ER and cycles through the numbers 4, 1 and 9. Does this mean I have separate 3 faults?
I left the machine for a couple of days and when I looked again there was some water in the bottom again. I closed the door and it started to pump the water out. I disconnected the other end of the hose and water was coming out so it isn’t completely blocked but I have no way to see how blocked it really is.
I guess I will have to get an engineer out to look at it.