Lord Sewel has become the first peer to stand down since new rules were introduced.
Police are investigating the peer Lord Sewell over allegations of drug-related offences.
Peer filmed apparently taking drugs with prostitutes; Syrian army short of troops
Obama warns Kenya on corruption and gay rights. Kurdish rebels say Turkey ceasefire over.
Six men found guilty of repeatedly abusing two schoolgirls over several years
Recriminations in the Labour leadership contest have intensified
The former Prime Minister Tony Blair says Labour has "rediscovered losing".
George Osborne tells some government departments to prepare for large budget cuts.
PM announces plans to tackle extremism; and FIFA reveals plans for reforms
Cameron accused of making up Syria policy "on the hoof"