Thanks for the reply Kay.
Sadly i dont think i'll be able to put something else where this is occurring as its right in the middle of my lawn. Please see the following picture to get an idea. As you can see, the tree isnt going anywhere either! :-)
http://zarch.pwp.blueyonder.co.uk/IMG_2815.JPG
I dont mind putting a bit of work in to cure the problem. So any suggestions would be gratefully recieved.
Cheers.