Gibraltar ?

Does anybody know why P&O Britannia is not going to Gibraltar on it's two next cruises

No, but here is a thread regarding changed Ports of Call (Fjords in this case) which you may wish to read. Again no explanation other than congestion which begs the question ...at what time do cruise lines actually commit to a port and how confident can we be that a particular port of call on a booked itinerary will be visited? Clearly at the moment some ports are more likely to be changed than others.

http://boards.cruisecritic.co.uk/showthread.php?t=2381527