Updates for London have now ended for the day but we'll be back at 08:00 on Thursday with the latest news, sport, travel and weather.

I'll leave you with this thought: 

Life's not fair, is it? Some of us drink champagne in the fast lane, and some of us eat our sandwiches by the loose chippings on the A597 

Victoria Wood 1953 - 2016

Riz Lateef
BBC London presenter

Tonight, in the latest of our special reports in the run up to the Mayoral Election looking at the big challenges facing the city, we examine security and how London can best be kept safe. 

I'll be at at London Wall, next to the ancient fortifications of the city.  The threats faced by the city have of course changed beyond recognition over the centuries.

But even over the past year London has been confronted with a new challenge posed by groups like so-called Islamic State, who have wreaked devastation on Paris and Brussels. 

To indicate the scale of the threat, the man responsible for keeping the city safe during the Olympics has told BBC London that an attack on the capital is inevitable.

BBC Weather

It'll be dry and sunny this evening, with light winds. Staying dry overnight too with mostly clear skies. 

With winds falling light, this will allow temperatures to fall and a touch of grass frost possible, especially around Lea Valley. 

Minimum temperature: 5C (41F).

BBC Sport

Image source, Rex Features

Midfielder Alan McCormack has extended his Brentford contract until the summer of 2017.

The 32-year-old triggered a clause in his contract entitling him to a further year at Griffin Park after making his 25th league appearance of the season against Cardiff yesterday.

A 21-year-old man was stabbed last night in Kensington & Chelsea.

The attack happened in St Helens Gardens, W10 just before midnight and the man remains serious but stable in hospital, say detectives.

The victim is believed to have been sitting in the back of a car at the time of the assault.

Detectives from the Trident and Area Crime Command are investigating.

One man has been arrested in connection with the incident and taken to a central London police station for questioning.

The Green Party's London mayoral candidate Sian Berry speaks to John Humphrys about air pollution in the capital.

BBC Newsbeat

This Sunday, 38,000 people will run the 36th London Marathon.

For many, it'll be their first time.

These are the 10 things which every London Marathon virgin will want to know.

Image source, Getty Images

Image source, PA

The Duke of York  has attended an unveiling ceremony to mark the completion of an extensive restoration project at Greenwich Market.

Prince Andrew, who is patron of the Royal Navy's oldest charity Greenwich Hospital, met market traders and well wishers in the sunshine.

Greenwich Hospital embarked on the property strategy for Greenwich in September 2012 with refurbishments to enhance the retail and residential community, which has been in the ownership of the Hospital since 1694. 

Image source, PA

Image source, Met Police

A teacher could face jail after she admitted having sex with a 16-year-old pupil.

Lauren Cox, 27, pleaded guilty to five counts of sexual activity with a child under 18 at Croydon Crown Court today, Scotland Yard said. 

While teaching at a school in Bromley, south-east London, in January 2015, she began having sexual contact with the boy and sent him explicit pictures and videos of herself. 

Eight months later, his parents began to suspect something was going on and the boy told them what had happened. 

Cox, from Oxted in Surrey, continued to messages the pupil and his parents contacted the head teacher of the school, who alerted social services.

PC Laura Davies said: "Cox abused her position of trust as a teacher and groomed the boy which went on to sexual abuse. 

"The abuse has had an extremely adverse effect on the boy, with his studies suffering as a result. 

"Cox never once admitted the offences during police interview. She has now admitted the offences today but only because of the wealth of evidence against her."

David Friend
BBC Radio London

Victoria Wood helped to save London's oldest continuously operating cinema, the Phoenix Cinema in East Finchley. She helped to raise funds for its restoration in 2010.

Head of operations Kate McCarthy told BBC Radio London’s Jo Good:

"We’re really proud that Victoria was happy to get involved. During the point when the cinema was restored a few years ago she was extremely supportive in the events we held in offering a face for the cinema that otherwise people might not have heard of…

"She was always absolutely wonderful, a really professional, friendly woman and really happy to give of her time and also her enthusiasm."

Comedian, writer and actress Victoria Wood has died aged 62 after "a short but brave" battle with cancer.

"The multi Bafta award-winning writer, director, actor and comedian died peacefully at her north London home with family this morning," her publicist Neil Reading said.

"The family ask for privacy at this very sad time."

Wood found fame in the 1980s with her TV series Victoria Wood As Seen On TV and was awarded a CBE in 2008.

She won five Baftas including two for her one-off ITV drama Housewife 49.

Image source, PA

The Labour candidate for London mayor Sadiq Khan, has rejected the prime minister's accusation that he has associated with extremists.

At prime minister's questions, David Cameron questioned Mr Khan's judgement over sharing a platform with a man he said supported so-called Islamic State.

A Labour spokesman said Mr Cameron's comments "demeaned the office of prime minister".

Mr Khan accused him of joining a "divisive, dog-whistling campaign".

A dog walker who saw a teenage boy drown in a canal has said "there was enough time to save him" and "he could still be alive". 

Kamila Grabowska was walking her dog at Walthamstow Marshes in east London with her daughter when she saw a boy running "very fast" from police before jumping into the water, St Pancras Coroner's Court heard. 

Jack Susianta, 17, of Hackney, east London, appeared "stressed" and refused a floatation ring thrown to him by police, Ms Grabowska said, but an officer did not enter the water until he had fully disappeared under. 

She said: "He (Jack) did not want to take the ring. It seemed as if he was not listening to what they were saying to him. "It was strange. He must have been under a great deal of stress." 

A police officer did enter the water a "few minutes later", she said, but added: "If he had wanted to save his (Jack's) life he would have gone in before."

Image source, Michael Noakes

As the nation prepares to celebrate the 90th birthday of its longest serving monarch tomorrow, an artist from St John's Wood will be reflecting on the hours he's spent painting the Queen. 

Michael Noakes says on one occasion he was interrupted several times..

Image source, PA

Scotland Yard will reinvestigate a 1987 bomb attack by animal rights activists on a London department store after new information was found by a probe into undercover officers. 

The force said it is "pursuing a number of lines of inquiry" including advances in DNA techniques and evidence that has been uncovered as part of Operation Herne, the investigation into the Met's secretive Special Demonstration Squad. 

It is set to reinvestigate the planting of an incendiary device at Debenhams in Harrow nearly three decades ago.

Former undercover officer Bob Lambert had infiltrated the Animal Liberation Front, which was behind that attack and two others at branches in Romford and Luton. 

The sight of Standards raised, drums beating and swords drawn greeted people in central London this morning for the first time in over 30 years.

The Household Cavalry exercised its right to the Freedom of the City of London riding to Aldwych from Hyde Park. 

The rare spectacle hasn't been seen since the Falklands War in 1982.

Three MPs explain why they are running the London Marathon this weekend.

Daily Politics reporter Ellie Price spoke to Vale of Glamorgan's Alun Cairns, Barnsley Central's Dan Jarvis and Derby North's Amanda Solloway about their preparations, level of support they have received, and any potential political rivalry.

BBC Weather

It will be a dry afternoon across all parts with plenty of sunshine. It will feel pleasant in the sunshine, although cooler where exposed to the brisk easterly wind. 

Highs of 15C (59F).

Nick Beake
Home affairs correspondent, BBC London

The police officer responsible for keeping London safe during the 2012 Olympics says a terrorist attack on the capital is "inevitable."

Sir Bob Broadhurst - a former commander with the Metropolitan Police - said the public should be reassured the capital's emergency services had the skills and resources to respond effectively to an attack.

The UK threat level from international terrorism has been "severe" since August 2014 which means an attack is "highly likely".

Scotland Yard says there is no intelligence to suggest a specific attack on London, but is urging the public not to be complacent to the higher threat level which it says has become the “new norm”.

Speaking to BBC London Mr Broadhurst said: "I think, sadly so, an attack is inevitable.

"It will happen at some stage, we don't know where, we don’t know when and on what scale.”