A serial rapist has had his 30-year jail term increased by a decade.

Joseph McCann, 35, was given 33 life sentences at the Old Bailey in December for a string of horrific sex attacks on 11 women and children during a 15-day cocaine and vodka-fuelled rampage.

McCann carried out a series of sex attacks in London and the north-west in April and May 2019, just two months after the convicted burglar was wrongly freed from prison following “major failings” by probation staff.

He was found guilty in December of 37 charges relating to 11 victims, aged between 11 and 71, and was described by the sentencing judge, Mr Justice Edis, as a “classic psychopath”.

The Attorney General’s Office referred his sentence to the Court of Appeal as “unduly lenient” this year. The 30-year-sentence also given to the UK’s most prolific rapist Reynhard Sinaga for a string of sex attacks was also referred and increased by a decade.

It is the first time two separate offenders’ sentences have been challenged together as being unduly lenient.