Rightmove this morning announced revenue and profits up for the first half of this year, driven by an increase in agents and a rise in what they are paying. Its underlying operating profits margin is 76.3%, up from 75.5%.

In the six months to June 30, revenue was up 16%, to stand at £93.1m.

Pre-tax profits shot up to £80.5m, up from £66.6m for the same period last year. Underlying profits of £82.3m were up from £70.3m for the first half of last year.

The portal also announced a record number of estate agency and developer customers since the start of this year. Total customer numbers are now a touch under 20,000, at 19,981. At an average of £830, they are paying £90 more per month than in the same period last year. The increase is also a record.

Almost all are agents, a record number at 17,534, paying an average of £789 per office per month. The number of agents on Rightmove is up from 17,336 at the start of the year.

Traffic to the site has also grown, up 15%, to 127.5m per month.

Nick McKittrick, CEO, said: “Rightmove was visited over 750 million times in the first half of 2016, up 15% on last year, as consumers continue to turn to us first to search and research on the only place you can see virtually the whole of the UK property market. With the recent launch of our new search technology we are now delivering an even faster and richer experience for consumers to ‘find their happy’ from the 1.1m UK residential properties advertised on Rightmove.

“We are focused on helping our customers succeed by delivering the most significant and effective exposure for their properties and brand and being the largest source of high quality leads. In addition to the advertising efficiencies we deliver, we have continued to help our customers drive operational efficiencies through the software, tools and support we provide which draw on our unique data and insight across the UK property market.

“Whilst the economic outlook is more uncertain due to the result of the EU referendum, the visibility provided by our subscription model coupled with the value provided by our products and the strength of the Rightmove brand and traffic give us confidence in delivering expectations for the current year.”

City analyst Anthony Codling at Jefferies was quick to comment, saying it had been another strong performance from Rightmove, saying: “The UK may not have remained in Europe but Rightmove’s business model remains resilient.

“With challenges ahead in the existing homes market we see risks to the upside as agents perhaps increase marketing spend to sell homes and fight for instructions. Challenges for estate agents translate into opportunities for Rightmove.”