"shaun" wrote in message ...
Try taking the front off the shower (making sure it's isolated from the
mains), turn the temperature dial (on the now disconnected part) up slightly
and then refit the front. You should now be able to turn the temperature
down a bit more than you could before.

Thanks.

The temperature dial on the front is one of these strange ones which
doesn't have a stop, i.e. turns continuously until it reaches the stop
on the dial in the box itself.