Fabio,
 >The same analysys could be done on British External Territories.
 
There are two categories of external territory - British Crown Dependency 
and British Overseas Territory.
The Crown Dependencies are the Bailiwick of Jersey, the Bailiwick of 
Guernsey (which includes Alderney, Sark and several other islands) and the 
Isle of Man. They are fully self-governing and outside the EU.
The Overseas Territories are Anguilla, Bermuda, British Indian Ocean 
Territory, British Virgin Islands, Cayman Islands, Falkland Islands, 
Gibraltar, Montserrat, Pitcairn Island, St Helena and Dependencies (which 
includes Ascension Island, Tristan da Cunha and several smaller islands), 
South Georgia & South Sandwich Islands, and Turks & Caicos Islands. All 
except Gibraltar are outside the EU, and all have varying levels of 
self-governance with the exception of BIOT and South Georgia which are 
governed directly from the UK (although they have local administrators).
There are also three additional overseas territories with special status - 
the British Antarctic Territory which is more-or-less virtual (as 
territorial claims are not recognised under Antarctic Treaty), and the 
Akrotiri and Dhekelia SBAs on Cyprus which are under military administration.
As for territorial disputes, well there are a few ;-)  Spain claims 
Gibraltar, Argentina claims the Falkland Islands and at times South 
Georgia, Mauritius claims the BIOT, there are low-level disputes with 
France over certain reefs off Jersey, both Denmark and Ireland have in the 
past claimed Rockall, and some groups in Cyprus request the return of the 
SBAs. The British, Argentinian and Chilean claims in Antarctica also 
overlap each other, although these are in theory held in abeyance.
Regards,
Kevin Meynell