The ranks of the House of Lords are due to be swollen with the publication of a new list of working peers, including Doreen Lawrence, the mother of murdered London teenager Stephen.
Mrs Lawrence's seat in the Upper House as a Labour baroness comes after a 20 year fight for justice for her son, who was stabbed to death at the age of 18 in a racist attack in south London.
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Thousands of passengers now face delays, with Southeastern trains warning "all services" would be affected.
Paramedics attended a scene in Willesden, north-west London, on Monday afternoon where they found the teenager with stab wounds.
At least five people have suffered minor injuries but the cause of the blast is still unknown.