TUV leader Jim Allister has written to the Prime Minister about compensation for the victims of terrorism in Northern Ireland.
Mr Allister's letter comes after the widow of a man shot dead by a soldier on Bloody Sunday received £625,000 in damages from the High Court.
The settlement was reached in 80-year-old Ita McKinney's legal action over her husband Gerry's killing in Londonderry in January 1972.
Mr Allister wrote the settlement had "stirred understandable questions" among families of policemen and others murdered by terrorists at around the same time.
He added: "Among those in touch with me is a police widow whose husband was murdered in 1975, leaving her with a 6-year-old and a 4-year-old and another child on the way.
"She got £1,000 in criminal injury compensation plus a police pension – which she lost on remarriage (till I secured a change in the law a few years ago restoring such pensions).
"When her treatment is compared with an award of £625,000 this week to a Bloody Sunday widow, then, the disparity is as obvious as it is shocking."
Mr Allister said it was "appalling" how many victims and widows of terrorism were treated in Northern Ireland.
He added: "Recent events must refocus attention on how the state compensated police and UDR widows in comparison with how the same state is now compensating Bloody Sunday relatives.
"There is a deficit to be made up to those who lost their lives serving the state."
Belfast Telegraph Digital