"The whole family cry together in agony when we imagine our children lying in blood.
If the emergency call had been handled properly it would have saved lives, even caught the perpetrator.
Our paramount aim is to work together, solve the case and catch the perpetrator."
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Building work has started at a new site for the Coventry-based London Taxi Company, as part of a £250 million investment.
Sunny spells through the day with a chance of a light shower, remaining breezy.
Monday morning will be rather cloudy with the risk of a little light rain in places. It should become dry and brighter in the afternoon.