OnTheMarket is to restart its TV advertising campaign this bank holiday Monday, as it ups the ante in attempting to raise consumer awareness of the portal – and in particular, the fact that many properties new to the market are first listed on it.

Helen Whiteley, OTM’s commercial director, said: “This latest round of national TV advertising highlights our commitment to invest heavily to build awareness and usage of the portal, and in turn, to generate more leads and greater value for our estate and letting agent customers.

“The key message about OnTheMarket getting thousands of new properties every month 24 hours or more before Rightmove or Zoopla powerfully engages with those who are actively looking for a new home and need to ensure they don’t miss out.”

The campaign will run through the rest of May, to reach 21.4m adults.

Yesterday however, the performance of its shares must have given it pause for thought.

They fell over 10%, or 11.5p, during the day to close at 100p.

The fall triggered ‘freezing’ at the end of the day after trading finished, with Price Monitoring Extensions to allow checking and verification.