In message , at 20:21:28 on Fri, 6 Apr 2012,
" remarked:
+44 is also used not only for the the United Kingdom of Great Britain &
Norther Ireland, but also for the Isle of Man as well as Bailiwicks of
Guernsey and Jersey.

Although call costs to and from the Channel Islands from the mainland
are usually more expensive.
--
Roland Perry