Millions needed to strengthen airport tunnels

It's costing tens of millions of pounds and will take another year to be completed.

A major project to refurbish and strengthen the famous road tunnels leading to Heathrow airport is continuing.

It's to improve safety and allow for the new generation of heavier planes using the runway above.

The work is being carried out during the night so the airport can operate as normal during the day.

Our transport correspondent Mike Pearse has more.