Patients including a pregnant woman and a person suffering from a suspected heart attack were forced to queue outside a hospital A&E.
People attending Diana, Princess of Wales Hospital faced a long wait last Monday and were told it was due to social distancing, reported GrimsbyLive.
Kay Parrish, a former NHS worker told the BBC she was faced with the line of patients when she took her friend who was having a suspected heart attack.
Ms Parrish said: "I went to A&E reception because I really couldn't believe what I was seeing.
"There were no chairs for anybody to sit down on. There was a lady that was pregnant she did not want a chair she was better stood up, there were people with children, a lady with a baby. Everybody was just waiting very, very patiently.
Social distancing and high demand were the reasons for the long queue
Ms Parrish claimed that there was no reason given for why people had to wait outside and that they only moved a matter of yards in 40 minutes.
She went on to say that she then discovered that there were no beds free either at the hospital and felt bad for the staff working there.
"It really did frighten me. There's going to be something terrible that's going to happen to somebody if that is a regular occurrence," she said.
Ms Parrish claimed the situation at the hospital was a lot worse than she expected and said she hopes that her family won't need medical care there as it was "frightening".
There were reportedly people with serious conditions who were made to wait outside
A spokesman from the Northern Lincolnshire and Goole NHS Foundation Trust said patients were being triaged and staff were regularly going outside to speak to and assess people in the queue.
He told the BBC that there was a high demand for the hospital services including A&E and generally the use of beds.
The spokesman said there was a queue outside the hospital on Monday and it was down to social distancing as there wasn't enough physical space within the A&E department. He denied that there was a delay in checking patients in.
Meanwhile a trust spokeswoman added that the hospital was very busy and advised people to seek alternative help such as their GP, pharmacy or the NHS 111 service when possible.