A Dragons' Den success story has been remanded in prison accused of knocking his 32-week pregnant partner unconscious. 

Ross Mendham, 40, who won investment for his Norfolk food business on the TV show, has denied causing serious injuries by punching her to the face causing her to lose consciousness during a violent argument.  

He was arrested on December 2 after police were alerted. 

Norwich Magistrates’ Court was told that the alleged victim had subsequently given birth but that the baby remains in a critical condition in hospital. 

Eastern Daily Press: Ross Mendham appearing on Dragons' Den in 2013 where he won investment in his food ventureRoss Mendham appearing on Dragons' Den in 2013 where he won investment in his food venture (Image: BBC)

Appearing in custody, Mendham, of Sorrel Grove in Cringleford, pleaded not guilty to assault occasioning actual bodily harm. 

Josephine Jones, prosecuting, said the charges were related to an argument between the two that is said to have escalated into violence and also included injuries to her arms.

READ MORE: Ross Mendham tames dragon Peter Jones with Barenaked Foods business

Mendham, who spoke only to confirm his name, age and address, is the son of the former Norwich City football star Peter Mendham.

Defence solicitor Matt Diss said he denied having hit the woman on December 2 and that he had “never done so”.

Prosecutors argued the serious nature of the allegation meant the court's powers were insufficient to hear the trial.

Magistrates committed the case to be heard at Norwich Crown Court.

Eastern Daily Press: Ross Mendham will stand trial at Norwich Crown Court after magistrates said they had insufficient powersRoss Mendham will stand trial at Norwich Crown Court after magistrates said they had insufficient powers (Image: Newsquest)

Mendham was denied bail and told he would remain in prison on remand until a preliminary hearing scheduled for January 3.

The ex-body builder businessman appeared on BBC show Dragons' Den in 2013 when he successfully got a £60,000 investment from Peter Jones for his instant noodle and pasta venture Barenaked Foods.

Since then, the packets of low calorie, low carb foods have gone on to be sold in most main brands of supermarkets including Waitrose, Sainsbury's, Tesco and Morrisons.

Last year he also launched a fashion brand called God of Design (GOD) that upcycled vintage and designer clothing.