OnTheMarket launched yesterday “not with a bang but a whimper”, claimed City analyst Jefferies.

But OnTheMarket claimed a very different story, while Zoopla itself said there had been problems with OTM’s launch. Meanwhile, its shares gained strongly.

Last night, an OTM spokesperson told Eye: “It’s been a brilliant opening day for Britain’s new major property portal.

“The response from our member agents has been overwhelmingly positive and we are seeing record expressions of interest from agents who are now considering coming on board.

“With our full launch marketing campaign set to begin at the weekend – combined with the extraordinary co-branding, promotional and social media support we are seeing from our members – we have an excellent platform to continue growing OnTheMarket.com. We are all looking forward to exciting times ahead.

“Now is the time for any independent agent not already with us to get on board and be part of creating a market-leading but low-cost alternative to Rightmove and Zoopla.”

But Jefferies, the analyst which advised Zoopla on its launch last summer but which earlier this month downgraded the portal from ‘buy’ to ‘hold’, denigrated the OTM launch.

It said it “is more of a damp squib than a nuclear warhead”.

It said that the self-policing of “one other portal” made the condition of membership look more like a guideline than a rule.

Anthony Codling, of Jefferies, said in a note to investors: “In our view, the aim of OTM is to challenge the fees charged by Rightmove and Zoopla to agents rather than to increase consumer choice.

“Zoopla offers the home buyer useful data such as how long a property has been listed and asking price history. OTM will not be showing this data.

“We believe that data (along with listings) is a key driver of traffic, which in turn is a key driver of revenues. Some agents may well be supportive of OTM, but unless it catches the imagination of the home buyer, we believe that its impact will be limited.”

Jefferies also said that London was key.

Yesterday afternoon it said: “London is the main battleground but Zoopla is neither down nor out thus far.

“Ahead of the launch of OTM, Zoopla appeared to be losing London and around 80% of OTM members were dropping Zoopla.

“We have searched the listings of all three portals across all 32 London boroughs for two and more bed residential properties for sale and rent: Zoopla currently displays 73,989 listings, OTM 9,243 and Rightmove 51,860.”

Jefferies reiterated its ‘hold’ advice on Zoopla shares, which yesterday gained almost 10% to 169p.

Jefferies set its price target at 180p but warned: “The threat of OTM is the main risk with respect to our estimates, which are likely to change depending on how successful (or not) OTM becomes over the next few months.”

Yesterday evening, Zoopla poured major doubt on OTM’s launch, saying that for example high-profile Beauchamp Estate were still showing all three logos.

However, last night a Beauchamp Estates spokesperson told Eye that it had been an oversight, with Zoopla listings due to be removed first thing this morning.