HI thanks for your help. I spent around 30 mins in the rain tying to find a hole in a pipe, wasn't very successful, there are a shed load of pipes and doesn't look exactly the same as the diagram above. I need a land rover enthusiast or inexpensive mechanic not to far from London or within that can sort it I think.
Slightly disheartened as I hoped I find it and be able to sort it but I guess it wasn't to be the case.
Thank you again for all you help.
Velz