The case of restaurant owner Mohammed Zaman, who has been jailed for six years over the death of a customer with a peanut allergy, is thought to be a legal first which sets a precedent for food suppliers.
Mr Zaman was convicted of gross negligence manslaughter in relation to the death of 38-year-old Paul Wilson.
After the verdict, the Crown Prosecution Service said it showed that food suppliers had a duty of care towards their customers.
Allergic reactions to food kill around 10 people every year in the UK and many more need hospital treatment, Trading Standards have said.
The body urged businesses to get in touch with their council to ensure they are meeting their responsibilities.
This tragic case highlights the importance of following that advice and what can happen when it is ignored.
Businesses that are unsure of their responsibilities should contact the trading standards team at their local council immediately.
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Three men arrested on suspicion of murdering Claudia Lawrence have been released on bail.
The men, who are aged in their 50s and from the York area, were held in custody while being interviewed by detectives from the Major Crime Unit.
Although they have been released from custody, the case remains active and enquiries are ongoing.
A man arrested on suspicion of the murder of Claudia Lawrence has been released on bail.
Police have renewed their appeal not to identify the individual in his 50s over concerns doing so would harm the investigation.
Police questioning a man on suspicion of murdering missing chef Claudia Lawrence say they have finished searching a property linked to his arrest.
North Yorkshire Police arrested the suspect yesterday in connection with Miss Lawrence's disappearance in 2009.
He remains in custody this morning.
A spokesman said searches at a linked property were completed last night.
Police investigating the disappearance of York chef Claudia Lawrence could be seen searching a semi-detached house in a quiet cul-de-sac in the city on Monday afternoon, following the arrest of an unnamed man on suspicion of murder.
Two police community support officers and police vans were stationed at the entrance to the road, which contains 10 houses, as the unnamed man, who is in his 50s, remains in custody after being arrested on Monday afternoon.
Officers entered and left the house throughout the afternoon and spent some time searching in the detached garage.
No-one else appeared to be at the property and the curtains were drawn in the bay windows to the front of the building.
Neighbours said they believed a man lived in the house with his wife.
One woman, who did not want to be identified, said: "They're a nice couple. I was really surprised, really shocked to see the police searching the house. "This is a nice road, we all look out for each other."
A police spokesman said searches are being carried out in relation to the York University chef's disappearance and are expected to continue for a number of days.