The family of a Highways Agency traffic officer killed by a car on the M25 as he dealt with the aftermath of another crash have paid tribute to him.
Relatives of grandfather John Walmsley, 59, from Gravesend, Kent, said he was "irreplaceable" and was noted for his honesty and kindness.
Mr Walmsley was hit by a Vauxhall Vectra on the clockwise carriageway at junction 5 near south Chevening, Kent, on Tuesday following an earlier accident involving a single vehicle. He died at the scene.
His family said: "Our dad, was a great dad, grandad and, most importantly, great husband who is irreplaceable.
"He had the affection and respect of just about everyone he came in contact with, due to his honesty and kindness with/to them. He will be greatly missed by his family and all who knew him."