Russell Brand was being sentenced on Monday after being found guilty of one rape and three counts of sexual assault.

The 51-year-old has already been told that he will face a lengthy sentence.

He was convicted following a high-profile, four-week long trial at Southwark Crown Court, with the jury delivering their verdict on Thursday afternoon.

The actor and comedian was found guilty of raping a young fan he met after one of his Hammersmith Apollo shows in 2009.

He was also found guilty of sexually assaulting a Capital Radio worker after encountering her in a corridor in 2005 and of sexually assaulting a Channel 4 worker during a forced massage in 2009.

Brand was found guilty of groping a MTV worker during a party at a Soho bar in 2004, but found not guilty of orally raping her in a toilet.

It has since been announced that Brand is being investigated over two further alleged rapes, including that of a 16-year-old girl.

Mr Justice Joel Bennathan, who presided over the case, told Brand that he would serve a custodial sentence and that he should expect it to be lengthy.

The comedian was also remanded into custody, despite his barrister, Ian Winter KC, making a plea for Brand to be given bail over the weekend so he could say goodbye to his children.

But the request was refused over fears that Brand would abscond instead of returning to court.

How long Brand will spend behind bars remains to be seen and there are several factors that will have to be taken into account.

The maximum sentence for rape is a life sentence.

Only the most severe cases, for example those that have involved a campaign of rape, would warrant the maximum sentence.

The judge will choose a starting point between 4 and 19 years based on categories set out in sentencing guidelines.

For sexual assault, the maximum sentence is 10 years, though sentencing typically ranges from a community order to up to 7 years in custody.

Crime experts suggest Brand may get between four and 13 years in jail.

An assessment will be made by the judge on the harm Brand caused to his victims and his culpability in each of the four offences.

The judge will also consider whether Brand poses a danger to women.

A starting point will be set for each of the four offences, one rape and three sexual assaults, before the judge considers the remaining factors.

In addition to weighing up harms and culpability, the judge must also consider aggravating and mitigating factors, as is usual with court proceedings.

This can include the age of the victim, any previous convictions, the use of weapons, or attempts to conceal or dispose of evidence.

None of Brand’s victims were children and he has not served any previous convictions, other than for the possession of cannabis around 30 years ago.

As Brand has been convicted of multiple crimes, it will be up to the judge to decide whether the jail terms will be served concurrently - at the same time - or one after another.

Concurrent sentences are usually imposed when the offence arises from the same incident or closely related conduct.

Consecutive sentences are applied when the crimes are unrelated incidents, severe acts against different people, or where the judge believes a concurrent sentence would not fairly reflect the gravity of the crime.

The judge will also perform a “totality” check, which means the sum of the sentences will be looked at to determine whether it is proportionate to the crimes.

Following the conviction, Brand was taken to a prison to be held on remand ahead of his sentencing on Monday. He may have been put on a Vulnerable Prisoner Unit if prison staff believe he could be targeted by other inmates.

It is understood he was taken to HMP Wandsworth where ambulances and fire crews were called on Saturday morning following an incident.

The prison where he will serve his sentence will have been decided ahead of his sentencing hearing and is expected to be the jail in south west London.