Russell Quirk has said that his site, eMoov, is undergoing a “game changing” transformation.

Quirk was responding to Eye after a number of agents claimed they had spotted anomalies on his site, with some taking to Twitter.

One agent sent Eye a screenshot from eMoov of a property displayed as being for sale apparently earlier this month but which the agent said had completed in May 2012.

Other agents claimed they had found other examples.

But Quirk told Eye: “We’re in the middle of a huge piece of technical work on our website and inevitably this is likely to give rise to anomalies here and there whilst this huge transition takes place.

“I believe our tech team have addressed the particular aspect that you refer to, however.

“I must say how very grateful I am to the growing number of our traditional estate agency friends who thankfully, with increasing time on their hands, are able to assist us with checking the site daily so that it just gets better and better.

“Once I retire, I look forward to being able to spend my days flicking through their websites for any issues that I can find and that I hope may assist them in return.”

Quirk declined to go into detail on the technical work taking place, but described it as “game changing”.

At the weekend, eMoov was listing 1,511 properties in the UK.