It is spinning but not pumping out water - Washing Machines

Drainage problems can be caused by:
a) Blocked Filter chamber
b) Blocked Sump
c) Blocked Drain Pipe
d) Failed Pump

You can check the sump and drain pipe are not blocked by disconnecting the drain pipe from the undersink trap or waste pipe and lowering to a bowl on the floor. The water should drain out into this bowl under gravity if there are no blockages. If this drains then you can should check the filter chamber if it is accessible on your washing machine (not all are). I would recommend you unplug the machine or take the fuse out of the switched socket before doing this. Drain the drum as above before doing this or you will get a gush of water coming out. You will usually have to remove a cover from the bottom of your machine to get to the filter chamber and twist it ant-clockwise to unscrew it. Check for any coins buttons etc trapped in there. If there is nothing there check the impeller will turn relatively easily by hand. If you still can't find the problem you might have a faield pump and I would recommend contacting an engineer.