sentences:  Coinciding with the expansion, former BBC director general Greg Dyke joined ATG in a new role of executive chairman.Potential competition concerns led to an investigation by the UK Office of Fair Trading (OFT).Its conclusion was that "the OFT does not believe that it is or may be the case that the merger has resulted or may be expected to result in a substantial lessening of competition within a market or markets in the United Kingdom" and "[t]his merger will therefore not be referred to the Competition Commission".