LONDON, Aug 20 (Reuters) - Britain's Co-operative Bank reported a near trebling of its losses in the first half of 2015, reflecting reduced income, losses on the sale of assets and an increase in costs.

Co-op Bank, which was on the brink of collapse before it was bailed out by its bondholders in 2013, said it made a loss of 204 million pounds ($320 million) in the first half, compared with a 77 million loss in the same period the year before.

($1 = 0.6380 pounds) (Reporting by Matt Scuffham, editing by Sinead Cruise)