Shares in Purplebricks start this week after strong trading last week pushed them to a new high.

They finished on Friday at 147p – having hit a record of 168p during the day –  valuing the loss-making firm at £353m.

At float less than four months ago, Purplebricks was valued at £240m.

Purplebricks shares started trading at £1 each just before Christmas and after volatile trading reached a low of 72.50p in January.

Comments online on Friday included: “Booked my profits today, the stock has had a cracking run.”

Purplebricks had 294 properties listed for sale in London at the weekend.

By contrast Foxtons had 1,620 properties for sale in London.

Foxtons share price ended last week at just under 167p, down from 289p last May.

Foxtons floated on the stock market in September 2013 with shares at 230p, valuing the firm at £649m. Its market capitalisation is now £459m, with shares 24% below their float price.

Foxtons says it has not lost a single listing to any online competitor.