The number of people killed in the Shoreham air crash in Britain could rise to 20, police have said.

It comes as the mother of a footballer who was among those who died called for aerobatic displays to be banned over land.

Sue Grimstone, whose son Matthew died when a plane ploughed into the A27, spoke as some drivers told how they narrowly escaped death.

Matthew (23) was on his way to play in a match for Worthing United with teammate Jacob Schilt and personal trainer Matt Jones (24).

All three men died.

"It's such a waste," Ms Grimstone told the Daily Telegraph. "Air shows should be over the sea. It should never have been over that road".

Meanwhile, Vivien Ayling (64) was on the road in West Sussex when the 1950s Hawker Hunter aircraft smashed down.

She told The Sun: "I saw it coming towards me, head-on. All I thought was, 'I need to get away fast'".

"It was all in slow motion, I imagine it's what an atomic bomb would be like".

She drove through smoke and flames before stopping her Citroen car to look back at the scene, and then driving on to work at an M&S store.

"I called my husband and told him I was OK but as soon as I got to work I started to cry," she told the paper.

"My friends there took me upstairs and I had a cup of tea with lots of sugar and it all started to sink in".

There were reports today that the Red Arrows would not perform their full aerobatic programme at the event because they saw it as too risky.

A source told the Daily Mirror that they would only perform a straight fly-past, with red, white and blue smoke coming out the back of the jets.

The Civil Aviation Authority said it was considering whether air show safety requirements should change.

It said: "We immediately commenced our review processes and remain committed to continuously enhancing the safety of all civil aviation and will provide further updates in the days to come".

Police are continuing their search for other victims of the disaster as they examine what may have caused the crash.

The A27 will remain closed today as recovery teams prepare to remove the wreckage of the aircraft by crane.

They will sift through debris strewn over 400 metres where the jet ploughed into the ground. More victims are expected.

Police have appealed for members of the public to stay away from the site while they continue their search.

The accident happened after the jet failed to pull out of an aerial loop in front of 20,000 spectators.

Investigators say they are continuing to receive calls from worried friends and relatives.

Pilot Andy Hill - a former RAF pilot and an experienced stunt flyer - miraculously survived the fireball but is in a critical condition in hospital.

He was pulled from the wreckage and it is not known whether he activated the ejector seat during the aircraft's final moments.

Although pilot error is one possible cause of the crash, investigators are also looking at the possibility mechanical failure was to blame.

An appeal has been put out for members of the public who may have photographed the disaster to come forward.

An Air Accidents Investigation Branch spokesman said: "A preliminary report will be published when the initial stages of the investigation are completed".

"We ask if any members of the public with footage or photos of the crash could provide them to the AAIB as they could assist the investigation. They can do this by contacting enquiries@aaib.gov.uk".

Footage and pictures of the incident can also be sent to police.

People with footage are urged to contact officers at shoreham.airshow2015@sussex.pnn.police.uk before sending any files.

Sussex Police Assistant Chief Constable Steve Barry, who confirmed on Monday morning the number of dead could rise to 20, said: "The scene itself is incredibly large".

"A lot of specially-trained officers are sifting, as we speak, so we do need to keep an open mind. But from what we have seen at this stage it is possible that we will find more fatalities".

Dozens of floral tributes have been left near the scene of the crash by local residents and mourners.