The first Boeing 787 Dreamliner flight has been successfully completed since the aircraft was grounded in January.

The Ethiopian Airlines 787 flew passengers from Addis Ababa to Nairobi after aviation authorities approved a revamped battery design.

Japanese airlines, which have been the biggest customers for the new-generation aircraft, were due to begin test flights yesterday.

Boeing is expected to complete repairs on all 50 of the grounded Dreamliners by the middle of May.

UK launch customer Thomson Airways is expected to receive the first of its delayed 787s in June followed by British Airways.