Mark Speakman, consultant urological surgeon at Taunton and Somerset NHS Trust, said the trial was being conducted randomly.

BBC: Enlarged prostate device trialled by NHS

Firefighter Garry Speakman, from Manchester, hopes to break the record for the fastest marathon in full fire uniform.

BBC: Runners brave marathon heatwave

Mr Speakman said he hoped this would allow them to compare the results of the two types of operation accurately.

BBC: Enlarged prostate device trialled by NHS