Thanks to this thread and Penguin45 viewtopic.php?f=33&t=32869, I have been able to determine that there is a leak and identify the cause of it.
It is a leaking hose (black) near the back on the right hand side, when viewed from the front.
I have attached a photo of the offending part.
Can anyone help identify it or is there an exploded parts manual available so I can check myself?
A link to an available part on the espares.co.uk site would be great.
Thanks in advance.