Major regional firm Gascoigne Halman – one of the first to take Gold membership with OnTheMarket – is quitting, and is set to go live with Zoopla this week.

The move highlights acquisition activity by the larger industry players, who back the likes of Zoopla to the tune of millions.

The departure from OTM by Gascoigne Halman follows its acquisition last autumn by Connells Group, a stakeholder in Zoopla.

It flags up the recruiting headache for OTM, in the midst of the current massive buying spree by corporates of independents.

Yesterday afternoon, John Halman of previously independent firm Gasgcoigne Halman told EYE: “The position really became inevitable when the decision was made that Gascoigne Halman should become a subsidiary of the Connells Group in the autumn of last year.

“As an independent company Gascoigne Halman was one of the first to take up Gold membership as we foresaw OTM as an opportunity for independent firms to have increased control over their internet spending.

“This mutuality gave us some control but has generally been poorly received by the press and some of our more savvy clients, who don’t like the “one other portal” rule.

“It also appears to have become a battle between Zoopla and OTM as to who has the biggest register and the largest amounts of traffic, with claims and counter claims from both organisations.

“With all of the larger corporate estate agents remaining significant shareholders in Zoopla they are committed to continue supporting them.

“It seems therefore that the battle will continue for some time yet and this is not helped by the corporate estate agencies being in such an acquisitive period.

“It does give OTM an extra challenge for the future.”

He added: “We have no argument with OTM and wish them well, but as a supplier of data to Zoopla and Rightmove we will no longer be eligible to appear on their site.”

OTM has consistently refused to comment on individual memberships.

Sources say that the acquisition price of firms such as Gascoigne Halman with tie-ins to OTM will have that cost of breaking the agreement factored in by the larger firms swooping the market for purchases.