The family of Lamara Bell have called on people to speak out on their experiences of police call handling as part of the inquiry into the M9 crash incident to "help make a change".

The call comes as investigations continue over the case in which Ms Bell, 25, and John Yuill, 28, died after they were left for three days in a crashed car near Stirling despite the alert having been raised.

Martin Bell, Ms Bell's brother, said as many as possible should take part as HM Inspectorate of Constabulary in Scotland said more than 2,000 people have already filled in an online questionnaire on the issue of call handling.

Mr Bell urged people to share his online post, adding: "Can I just mind everyone that there is an online questionnaire for people to fill out about police call handling to 999 and 101.

"If you have had any bad experiences get it filled out and help make a change."

More than half to take part so far are employed by Police Scotland.

Derek Penman, HM Inspector of Constabulary in Scotland, said: “The level of interest has been very good so far but we are aware that some people may have been on holiday and may not be aware that the questionnaire is still ‘live’ and they have the opportunity to take part until midnight on Sunday, August 23."

The inspectorate will visit all Police Scotland call centres to speak to officers and civilian staff over the next two weeks.