A knifeman stole a substantial amount of cash from a bookmakers in Princes Risborough this morning.

The man is believed to have entered Corals in Market Square from a rear access at about 10.05am and demanded money from staff inside, with police saying he had a knife.

He then fled the building after taking a “substantial amount of cash in notes”.

The offender is described as white, around 5ft11ins, slim with a local accent.

He was wearing a navy blue hooded top and bottoms and a black scarf over his face. He was also wearing gloves.

No one was physically hurt during the robbery.

If you have any information contact officers on 101. Alternatively, speak to Crimestoppers anonymously on 0800 555 111 or online at www.crimestoppers-uk.org