A 20-year-old man has been arrested on suspicion of attempted murder after stabbing a police officer in the head.
Amanda Houston has the latest on the weather for London and the surrounding areas.
Eight fire engines and 58 firefighters are currently tackling a fire at a pub under refurbishment on Doggett Road in Catford, London Fire Brigade said.
Firefighters led four people to safety from the building who were taken to hospital suffering from smoke inhalation but there were no reports of any serious injuries.
Most of the roof, half of the second floor and part of the first floor of the building is reportedly on fire.
Firefighters from Greenwich, Lee Green, Bromley, Forest Hill, Lewisham, Bromley, East Greenwich and Orpington fire stations are at the scene.
Amanda Houston has the evening forecast for London and the surrounding areas.
A 28-year-old man has been arrested on suspicion of rape after two passers-by caught him allegedly sexually assaulting a woman in Islington.
Specialist police officers are now trying to trace the victim who left the scene before police arrived, following an attack this morning.
Officers were called to Caledonian Road, near Sturmer Way, just after 2am.
On arrival, they spoke to two members of the public who had detained a man after allegedly catching him sexually assaulting a woman.
The man had attempted to flee the scene but was apprehended by the two men - one of whom witnessed the attack.
The victim of the sexual assault is described as a white woman aged between 22-27 years with curly hair. Police are urging her to contact them immediately.
The 28-year-old man detained by the two men was subsequently arrested by police on suspicion of rape and has been taken to a north London police station for questioning.
The victim and suspect are not believed to be known to each other. The investigation continues.
Shadow home secretary Yvette Cooper claimed the security services' hands were tied for nearly five years by Mrs May's "wrong" decision to scrap powers to move terror suspects away from their extremist networks.
Relocation powers have been reintroduced by the coalition this year but Ms Cooper called for the security services to immediately brief the Intelligence and Security Committee on how the loss of the measures might have affected their work.
This would allow MPs to review whether the loss of relocation powers had led to more British jihadists travelling to Syria and Iraq and more radicalisation in the UK.
Ms May told BBC1's Andrew Marr Show:
Theresa May has called the UK's security and intelligence services "true heroes" amid fresh questions over the handling of the Islamic State extremist known as "Jihadi John".
Addressing the Conservative Party's Welsh conference, the Home Secretary issued an impassioned defence of the way they were addressing the danger posed by Islamist extremism and other threats.
"You might not see the work they do. You might not know the risks they take. You might not be told about the plots they stop," May said.
"But these remarkable men and women are true heroes. And they deserve the support and respect of every single one of us."
A man has been arrested following a fatal hit and run in Camden, where a pedestrian was killed.
The police were called shortly before 9am today following reports of a collision between a car and a man on foot on Camden Road with the junction of Royal College Street.
The car failed to stop, leaving the pedestrian with injuries.
Paramedics attended, but the victim, a 25-year-old man, was pronounced dead at the scene.
Officers on the ground assisted by information from witnesses and the police helicopter were able to trace the car to the Finchley Road area of Swiss Cottage.
A man was later arrested nearby on suspicion of causing death by dangerous driving, driving with excess alcohol and failing to stop.
He is in custody at a central London police station.
The victim's family have been informed but formal identification has not yet taken place. A post-mortem examination will be scheduled later.
The surrounding roads are still closed and motorists are being urged to avoid the area at this time.