British Airways' regional BA CityFlyer operation turned in a strong performance last year, doubling its pre-tax profit to £42.1 million ($52 million).

Over the course of the year the company, which operates primarily from London City airport, received another Embraer 190 – taking its fleet to 22 aircraft, including six Embraer 170s.

CityFlyer also wet-leased a Saab 2000, mainly for Isle of Man services.

The carrier's revenues were up by 18% to £278 million while it limited the expenditure rise to 14.5%, according to newly-filed accounts for the year to 31 December 2018.

As a result its operating profit increased by 28% to £36.6 million.

CityFlyer says it made "tactical" changes to its route network from London City over the year, with increased frequency to Milan, Zurich and Frankfurt, and new services to Rome. The airline also continued its programme of leisure flights from other UK regional airports.

The carrier is confident that its operations will experience "no significant long-term impact" from the UK's withdrawal from the European Union, even if this takes place without a post-Brexit agreement, given the contingency arrangements already in place for air transport.

CityFlyer has expanded its fleet further this year, to a total of 19 Embraer 190s and six Embraer 170s.

Its operations are unaffected by the strike action which has grounded virtually all of BA's mainline operations over 9-10 September.