What we know about the London attackers

Scotland Yard has named two of the terrorists involved in the London Bridge attack as Khuram Shazad Butt and Rachid Redouane.

:: Khuram Butt

Butt was known to police and MI5 and Assistant Commissioner Mark Rowley said an investigation into him started in 2015. But, with "no intelligence to suggest that this attack was being planned…the investigation had been prioritised accordingly".

In his neighbourhood in east London, Butt was known as Abu Zaitun – or Abu for short.

The 27-year-old came to Britain as a child when his parents sought asylum from Pakistan – and he lived in a ground-floor flat in Barking.

One neighbour, who did not want to be named, said he stared angrily whenever he saw women cycling on the estate. She described it as "sinister" and "sexist".

Another neighbour said they enjoyed arguing about Arsenal and whether Arsene Wenger should remain manager.

Two young boys told me he had given them sweets and £2 each in a nearby park last week. He told them they must be polite to their dads and respect their elders.

But a parent also told us that she confronted him and asked him not to speak to her children any more – fearful they were being radicalised.

An online CV shows that Butt obtained an NVQ in business administration in 2009, and a diploma in teaching English to adults in August 2016.

The CV lists two jobs: one he started in May at Transport for London, and another at a company called Auriga Holdings, which we believe to be a franchise for a local KFC restaurant.

:: Rachid Redouane

Redouane was 30 years old and born in July 1986. He claimed to be Moroccan and Libyan.

Scotland Yard says he also used the name Rachid Elkhdar, as well as a different date of birth which made him five years younger.

Redouane was not known to those authorities.

According to Sky sources, an Irish ID card was found on Redouane’s body. Reports have said he lived in Rathmines, Dublin. It is believed he used Irish jurisdiction to get a European Union permit allowing him to be in the UK.

Police in Ireland are investigating, with detectives trying to establish whether he travelled to Syria.

He is understood to have lived in the Rathmines area of Dublin for 18 months between 2014 and 2016. He was married to a Scottish wife.

:: A third terrorist

An investigation is under way to establish the identity of the third accomplice – and Scotland Yard has asked for people with information about any of the three men to come forward.

(c) Sky News 2017: What we know about the London attackers