Zoopla owner ZPG said it has more than 100 agent branches since the flotation of OnTheMarket on the stock market last month.

The flotation meant an end to the ‘one other portal’ rule for some OTM members.

Among the companies to have rejoined Zoopla since its flotation on February 9 are Curchods with 19 branches, Douglas & Gordon (18 branches), Henry Adams (15 branches), Morris Marshall & Poole (five branches) and Whitakers (four branches).

ZPG added that Chancellors has also renewed its listings agreement.

The portal said “numerous” other agents with one, two or three branches had also joined.

However, all of the businesses named also still list with OnTheMarket, including Chancellors, which OTM signed last month to a new five-year deal.

Mark Goddard, ZPG Property Services’ outgoing managing director, said: “We are delighted to welcome back and further cement our relationships with all these agents from around the country who understand the advantages we deliver to their business.

“Our proposition continues to go from strength to strength and with the best value portals, most advanced software and widest range of tools we continue to help agents gain exposure and generate additional revenue.”

A spokesperson for OnTheMarket said: “In the first two weeks of trading on AIM, we welcomed Arun Estates and Chancellors Group of Estate Agents which between them operate more than 150 branches.

“In addition, we had signed up 243 new listing agreements with agents within the first two weeks after our admission to AIM and agent support is continuing to grow.”