Zoopla says that “dozens” of agents who left it to trial OnTheMarket have now returned.

Yesterday evening, OTM dismissed the latest blast from Zoopla as “hand-wringing” and said Zoopla was continuing to lose business to it.

In a statement yesterday, Zoopla also said that the launch of OTM in January had barely affected its own audience.

The group said that traffic to its websites and mobile apps reached 50m visits in March, with mobile accounting for a record 62.6% of all visits.

It said that Zoopla’s audience “has been largely unaffected by the launch of OTM”.

It went on: “According to both ZPG internal data and confirmed by independent research firm Hitwise, ZPG traffic since the end of January has been on average more than 25 times greater than OTM’s with the gap between the two websites widening over the three weeks to Easter.”

Zoopla spokesperson Lawrence Hall added: “We are delighted with our continued strong audience levels and the value we are delivering to our members.

“It is a tough market and attracting a significant audience and delivering high levels of appraisal and applicant leads along with brand awareness for our members is what we are focused on.

“Our members enjoy a significant competitive advantage over non-members and we have now seen dozens of members who left us to trial OTM return.”

An OTM spokesperson told Eye:  “More hand-wringing from ZPG as it continues to lose business to OnTheMarket.com.

“We recently passed the 5,000 offices mark, having added over 800 offices to membership since the turn of the year. The great majority of these have left Zoopla to join us. We continue to grow our membership on a daily basis.

“Members tell us that leaving Zoopla has made no difference to their instruction-winning capability and that they are receiving at least as many good quality leads from their overall online presence as before.

“They report that the property-seekers they talk to are enjoying the clear and elegant search experience and the faster response times offered by OnTheMarket.com whilst vendors and landlords appreciate the quality of presentation of their properties and the absence of spurious and unhelpful data and distracting advertising around them.

“As a new portal, we do not yet have the level of casual browser traffic enjoyed by the duopoly portals – much of which is driven by property alerts. Our focus is on attracting the much smaller number of active property-seekers in the market and generating good quality leads for our member agents.

“Our traffic grew during March, with more than 1.5m unique visitors coming to us. More than nine pages were viewed per visit, indicating a good level of engagement and one comparable with other major portals. The number of repeat visitors increased significantly and trackable email and telephone leads were also well up.

“We anticipate continued strong growth in consumer usage  as our multi-million pound advertising campaign continues and active property-seekers increasingly appreciate the service and the fact that more and more agents are launching their new properties exclusively with us first.”