Tom Hall from Lonely Planet said Derry was a vibrant city and was undergoing a renaissance.

BBC: Londonderry 'world's fourth best city to visit' in 2013

Derry's City of Culture year was a major reason for its fourth placing in the Lonely Planet list, but Tom Hall said there were other considerations.

BBC: Londonderry 'world's fourth best city to visit' in 2013

Tom Hall of the travel guide publisher, Lonely Planet, said travel companies would put in place contingency plans when they knew the strike dates, such as scheduling flying from alternative airports.

BBC: BAA airport staff vote for strike action