Police are to speak to a van driver who collided with Tour de France winner and Olympic gold medallist Bradley Wiggins as she drove out of a garage forecourt.

Wiggins, 32, was thrown from his bike when it was hit by the vehicle near to his home in Lancashire on Wednesday night. He is thought to have suffered broken ribs, cuts and bruises and a dislocated finger but is to undergo further scans at the Royal Preston Hospital to assess the full extent of the damage.

The winner of four Olympic gold medals, including in this year's men's time trial, was due to attend a number of interviews to promote his book My Time, which is published on Thursday.

He was to have appeared on the Chris Evans show on BBC Radio 2 and later record an item for The Graham Norton Show on BBC One to be broadcast on Friday night. Wiggins was also scheduled to take part in a webchat with The Guardian which has serialised extracts of his autobiography this week.

An ambulance was called to the scene of the crash in Crow Orchard Road, Wrightington, shortly before 6.10pm on Wednesday.

Garage attendant Yasmin Smith went to Wiggins's aid when she heard a screeching of tyres and a loud bang. She said: "I came straight outside to see a gentleman sat on the pavement, but I didn't realise who he was. I just went over to help. The ambulance and the police had been called."

Ms Smith said the driver was in shock. She said: "She was very upset, even more upset when the police actually said 'do you realise who you've hit?'. That really put her back, because obviously she felt bad enough."

The driver of the white Vauxhall Astra Envoy, a local woman, was uninjured in the collision. A spokeswoman for Lancashire Police said: "We plan to speak to the driver as part of our inquiries."

A broken wing mirror from her vehicle was laying on a grass verge near the exit of the petrol station.

In a statement on its website, Team Sky said: "He is being kept in hospital overnight for observation but the injuries he has sustained are not thought to be serious and he is expected to make a full and speedy recovery.'