Purplebricks has firmly clarified that it continues to receive and pass on all offers, after an answer given to an online Trustpilot review appeared to suggest that this might not be the case.

The review, which gave Purplebricks a rare one star, said: “Very upset, my son had a lovely house lined up and all was agreed! Purplebricks found another buyer and went ahead and cast my son’s offer aside. Very bad form and very upsetting.”

The response posted on Trustpilot said: “At Purplebricks we pride ourselves on providing a transparent and convenient service and we would never endorse the practice of gazumping. The way that the Purplebricks platform is designed means that a number of offers could be submitted at any one time, and all of those offers go directly to the vendor for their consideration.

“Once an offer has been accepted and solicitors details have been entered by both sides, the property is always withdrawn from the market for sale without exception.

“At this point no further offers can be submitted through the Purplebricks platform. This is because at that point we would consider that both parties have commenced legals and are committed to the sale.”

Under the Estate Agents Act 1979, the agent is obliged to pass on every offer for a property, right up until exchange of contracts. The duly is only released if the agent has specific written instructions from the vendor.

Asked to comment, a Purplebricks spokesperson said: “Everyone can make an offer through Purplebricks at any time 24 hours a day.

“In the event that an offer has been accepted, the customer decides whether they want to continue to market the property or have it marked as sold subject to contract. If the property remains on the market, offers are made in the usual way.

“If it is taken off the market, the property is marked sold subject to contract and offers may still be made at any time by speaking to our central property team who are available 24 hours a day.

“All offers are communicated to our customers verbally and in writing, in accordance with the Estate Agents Act 1979.”