The Diana, Princess of Wales Hospital in Grimsby has put its parking fees up by 50p to �1.50 per visit.

At Scunthorpe General Hospital, patients face a �1 rise to �1.50 and staff will be charged �4 a month to use a specially-created car park.

Trust spokeswoman Rachel Macdonald said: "These moves will allow us to improve car parking and security."

The charges would generate funds for the introduction of CCTV systems and 24-hour security patrols, she added.

"It is the first increase since charges were introduced several years ago [at the Grimsby site], and compares favourably with the charges at other sites in the town," Ms Macdonald said.