Read this thread:
http://www.consumeractiongroup.co.uk...it-scheme.html
I feel you are probably wasting your £40.
It is unlikely that the Judge will allow you to withhold your address if you choose to sue, since it will probably appear to him, from the facts which you have posted here, that you do not have a good enough reason for doing so.
Unless you have additional facts or details which you have failed to mention, there seems little likelihood of your application to withhold your address succeeding.
The suggestion of arranging an accomodation or "forwarding" address does, on the whole, seem to have a better chance. But don't tell the court that it's only an accomodation address!
Advice & opinions on this forum are offered informally, without any assumption of liability. Use your own judgment. Seek advice of a qualified and insured professional if you have any doubts.