Condensation on mains water inlet pipe

[Rollerball]

The mains water for my property comes up from the floor of my airing cupboard by means of very thick, slightly flexible blue plastic pipe - it has a valve fitted and of course some copper pipe on either side of the valve. Naturally the water is cold so a small amount of condensation forms on the copper pipe - how can this condensation be prevented? It will have been like this for years, but having only just noticed it I'm naturally curious if it can be easily prevented.

Ta.

 

[HERTS P&D]

See below:

http://www.wickes.co.uk/invt/210012

Andy

 

[Whitespirit66]

Put some lagging on it.

 

[Whitespirit66]

Too slow again.

 

[Rollerball]

Thanks, think I have some of that knocking around somewhere.

 

[Whitespirit66]

Too slow again.

Perhaps I'm lagging behind!