Footage has captured the final moments of a "much-loved" elderly man who was stabbed to death while riding his mobility scooter home.
CCTV shows 87-year-old Thomas O'Halloran on his way back from busking to raise money for Ukraine outside a Tesco branch in Greenford, West London.
The clip was taken just 20 minutes before he was fatally attacked a mile away from the store.
