According to its unaudited final results, headline revenues climbed by 4 per cent to £3.25m for the year ending 31 March 2015. Excluding a previously disclosed one-off suspension payment from a US licensee, meanwhile, underlying revenues effectively increased by more than 20 per cent.

Meanwhile, earnings before interest, taxes, depreciation and amortisation narrowed to £418,000 in 2014/15 from £744,000 a year earlier. And excluding the above one-off payment, the company reported that earnings effectively fell by more than 60 per cent.

David Traynor, chief executive of Byotrol, said: "We are pleased with progress this year.

"Financial performance is improving, our technology is now better in efficacy and breadth, and we are building a network of high-quality partnerships in sales, marketing and product development. We expect to make further progress in the coming year."