THERE are no grounds to appeal the decision not to prosecute John Downey for the Hyde Park bombing, the Attorney General for England and Wales has said.
Dominic Grieve was giving evidence to the NI Affairs Committee as part of its inquiry into the On the Runs scheme.
Unionist politicians have criticised the decision by the Crown Prosecution Service not to appeal that judgement.
The decisions to prosecute Mr Downey and not to appeal the judgement, were both taken by Mr Grieve.
Under the On the Runs scheme, letters were sent to around 200 republicans telling them they were not wanted by the police.
The collapse of John Downey's trial earlier this year sparked the On the Runs crisis.
Mr Downey was mistakenly sent a letter telling him he was not wanted for questioning by the PSNI or any other UK police force.
The PSNI later discovered that he was in fact wanted in connection with the 1982 IRA bombing that killed four soldiers, but did not correct the mistake.
In February, a judge at the Old Bailey in London said that meant a decision to prosecute him amounted to an abuse of process, and ruled that he could not stand trial.