Four estate agents have left OnTheMarket.

They are named by eMoov – which as an online agent cannot itself belong to the portal – as Stirling Ackroyd, Statons, Alex Neil and Cheffins.

The online agent says that it has been tracking all the major property portals and says: “This reveals some interesting developments over last few months.

“After the initial rush to join Onthemarket.com earlier in the year, their growth appears to be stagnating with little or no increase in membership numbers over the last couple of months.

“The reality appears to be setting in for its members as a number of notable names have quit OTM to return to Zoopla, including multi-office agencies like Stirling Ackroyd, Statons, Alex Neil and Cheffins amongst others.”

eMoov claimed it has received a number of requests this year from sellers wanting to list their property because eMoov markets on both Zoopla and Rightmove. It said last week it took on a property in London SE1 at £385,000. It had been listed at OTM, but eMoov said the vendor wanted to switch in order to have it listed on Zoopla.

A Zoopla spokesperson said this morning: “We do not comment on individual members.”

In a further development this morning, a Barclays report apparently based on interviews with 100 OTM member agents said that 9% are considering leaving, with a further 35% saying they will review their membership. However, over half (56%) said they are committed long term to OTM. Only  a third of OTM agents (34%)  reportedly say they would definitely return to Zoopla should they quit OTM, with the rest being unsure, saying it is unlikely, or giving a firm no. The Barclays report is also said to be based on interviews with 50 non-OTM agents.