Tackling modern slavery in Britain is a "personal priority", the Home Secretary has said following the discovery of three women allegedly held as slaves for at least 30 years.

Theresa May said details were still emerging in the case in Lambeth, south London, but it was clear many other victims were "hidden in plain sight" across the country.

Scotland Yard yesterday said two of the women rescued had lived in a "collective" with the man arrested, after meeting through a "shared political ideology".

A man and woman, both 67, have been released on bail after being arrested on Thursday in connection with the investigation into slavery and domestic servitude.

Mrs May said the "one positive" of the case was that more people were aware of the issue of slavery, which still has "shocking presence in modern Britain".