phil wrote in message
...
Please see these two pictures:

http://i59.photobucket.com/albums/g3...9/P9260050.jpg
As can be seen, the water inlet pipe is at the bottom.

I'm trying to replace the minimum that's necessary, so presumably I
can purchase a part that will screw onto the white part represented by
the large plastic nut just behind the flush handle?

Despite what others have said, all you need to replace is the diaphragm
washer.
It looks like this
http://i10.tinypic.com/2nl9saw.jpg
and costs a few pence,
... unless you buy it from B&Q



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