The family of a woman killed in the motorway coach crash near Heathrow has paid tribute to her "immense spirit".
Chris Toner was said to be "the life and soul of the party"
The London-to-Aberdeen National Express coach overturned on Wednesday, killing grandmother Christina Toner, 76, from Monifieth, Dundee.
A man in his mid 20s was also killed, although his name has not yet been released by police.
Mrs Toner's family, speaking for the first time, said her death would leave "a void in many people's lives".
Christina, known as Chris, was on board the double-decker when it crashed on the slip road from the M4 to the M25 just before midnight on Wednesday.
The tribute, released through Thames Valley Police, read: "Chris was wonderful and wild, full of laughter, happiness and generosity.
"She was beautiful. Always the life and soul of the party, she lit up any room she walked into and at 76 she could outlast even the youngest person at a party.
"She had immense generosity of spirit. She was always thinking of others and this is demonstrated by the love of her family, the amount of friends she had and the esteem in which she was held."
The 76-year-old leaves behind her husband of 53 years, Jimmy, a 52-year-old son Barrie and a 47-year-old daughter Gail, who live in Swindon and Abu Dhabi.
Investigations into the cause of the accident are ongoing
She also had three grandchildren and an older sister.
The former hospital PA was born in Lochee in Dundee and came from a large family in the farming community of Aberdeenshire.
She lived for many years in Broughty Ferry before moving to Monifieth five years ago.
"She was the best mother and friend a child could ever have and best friend to all who knew her. She will leave a void in many people's lives that no one will ever be able to replace," the tribute added.
Mrs Toner's funeral is expected to take place in Broughty Ferry, Dundee, but a date is yet to be set.
All those on board the coach, 67 passengers and two drivers, were taken to hospital and 22 people are still being treated.
The 40-year-old driver who was held on suspicion of causing death by dangerous driving has been freed on bail.
Thames Valley Police repeated an appeal for anyone who witnessed the accident or has information that could help the investigation to contact them.
National Express's fleet of 12 Neoplan Skyliner double-decker coaches have passed safety checks, but remain off the roads while the company completes its own investigations.