Rightmove has reassured agents that there is absolutely no sinister motive for its new Best Price Guide demanding the name of the owner whose property is being valued before it will product the report.

An agent who approached EYE with his worries said: “Unless you fill in the mandatory field requiring the name of the person that the report is for, it simply doesn’t allow you to use the Best Price Guide.”

He queried why Rightmove needed the information and said it was possible that Rightmove could be amassing a database of prospective sellers to which it could then market directly, or sell it back into the market.

The agent was also concerned that if Rightmove were ever to take private listings, then this could help them.

He said he felt that in an era of big data, it was not plausible that the contact information would not be stored and/or used.

However, a spokesperson for Rightmove told us: “We ask for the name of the person that the Best Price Guide is going to so that their name can be added to the front of the report, to personalise it.

“Rightmove does not store or use this contact information.”