A man jailed after sexually assaulting a woman he thought was his girlfriend after he mistakenly entered the wrong flat while drunk has failed in his bid to appeal his jail sentence.

Aaron Riseborough, 32, had "drunk, and drunk and drunk" before going back to what he thought was his Norwich flat, taking off his clothes and sexually assaulting a woman who was asleep in bed.

The woman, who cannot be identified for legal reasons, woke up to discover Riseborough naked in her bed in the process of assaulting her.

Police were called and he was found to be at least three times the drink drive limit and had also taken cocaine.

He told officers he had gone into the wrong flat which he had "believed to be his" and got into bed with a woman he thought was his girlfriend.

The defendant was sentenced to five years and four months in prison after he admitted two counts of assault by penetration against the woman in the early hours of July 26, 2020.

Following his conviction in March this year, Riseborough, of Hamilton, Lanarkshire, appeared at the Court of Appeal in London as part of a bid to appeal his sentence.

Court of Appeal in LondonCourt of Appeal in London (Image: PA) But following a hearing on Friday, presided over by Lord Justice Singh, Mr Justice McGowan and Judge Peter Blair, a spokesman confirmed the appeal against the sentence was "dismissed".

At the sentencing hearing before Norwich Crown Court earlier this year, the victim, in statement, said following the assaults, she had to go and stay with her mother for four months, sleeping with her in bed as she was "too scared to sleep alone".

Norwich Crown CourtNorwich Crown Court (Image: Peter Walsh, Newsquest) Jailing Riseborough for a total of five years and four months, Recorder Paul Garlick said they were "extremely serious sexual offences".

Aaron RiseboroughAaron Riseborough (Image: Norfolk Constabulary) He said: "It's hard to imagine a more horrifying experience for any young woman to go through than to wake up in her own home and to find someone committing the conduct which you did against her".

Jonathan Goodman, mitigating, said it was an unusual case in which Riseborough, a man of previous good character, was "utterly horrified" to discover he had sexually assaulted the woman.

He said it had been a "horrific mistake" by the defendant, who was remorseful, and one which "costs him dear".

Riseborough was put on the sex offenders register for life.