Downing Street says it isn't possible to prevent 'one or two offenders' convicted of manslaughter from being let out of prison early, without setting a precedent for other cases.

Downing Street said it was 'not possible' to exempt 'one or two offenders' convicted of manslaughter amid an outcry at the possibility of Jessie Cole and Albert Bowers being freed.

The Prime Minister is said to have been examining whether to exempt people who kill emergency service personnel from a controversial scheme to free up space in massively…