The son of the woman thought to have been murdered by Lord Lucan has said the peer “could still be alive” following his mysterious disappearance 50 years ago. Neil Berriman, who was given up for adoption as a baby, has been consumed by the case since he discovered he was the son of Lord Lucan’s children’s nanny Sandra Rivett more than a decade ago at the age of 40. Ms Rivett’s body was discovered in November 1974 in the basement of a central London house but police found the prime suspect, the seventh Earl of Lucan, had vanished.

His car was later found soaked in blood in Newhaven and an inquest jury ruled he was Ms Rivett's killer a year later. Neil Berriman, the son of Sandra Rivett, believes Lord Lucan 'could still be alive' (Image: BBC/Five Mile Films/Dickie Dawson/PA Wire) Speaking about how he felt when he discovered he was Ms Rivett’s son, Mr Berriman said: “When it was confirmed Sandra was my birth mother, I fell into complete shock and could not believe somebody would do this to her. I was cross, angry and wanted that man caught.

“The emotional side of it all was incredibly sad and painful and I felt so sorry for her. Can you imagine what she went though? Total hell.” He added: “She’s the mother I never knew, but that makes no difference.

“Sandra is still my mum and I will do the best I can for her. There is also no actual proof that Lucan was dead so he could still be alive.” Discussing what has motivated his search, he added: “I was not .