Rightmove last night confirmed that it is conducting an inquiry into alleged ‘portal juggling’.

That is the alleged gaming of the system, by which some properties are taken down and then added again as though they are new listings.

Sometimes, it is alleged, the properties are taken down after being advertised at one price.

They are then added again at a new price, and then very shortly afterward can be viewed as under offer.

That, says a circle of agents which has been conducting online research into listings and using Twitter to make some of their claims, allows some firms to claim that they are achieving a high percentage of the asking price.

Other properties apparently include some that look as though they were listed after open house events were advertised.

Yesterday evening, a Rightmove spokesperson, speaking after being sent alleged examples, told EYE: “We have a process in place for all data quality queries that we receive, which involves thoroughly researching the properties on our system and speaking with the agent in question, to find out if there is a legitimate reason for a property being added.

“We do not tolerate reloading properties as new and if there is found to be no legitimate reason for a property coming back on the market this is escalated in line with our process, and dealt with accordingly.

“This is an ongoing query and we can update you once it’s been completed.”