5 NEED-TO-KNOWS TODAY

1 to watch

Inside The Factory, BBC Two, 8pm: Gregg Wallace visits a factory in Somerset that produces one million pots of yoghurt every day.

1 to know...

Dame Agatha Christie, the world’s most successful detective story writer, died aged 85 on January 12, 1976.

1 to answer

Which son of a politician vanished in the Sahara during a car rally on January 12, 1982? Answer above right.

Birthdays

Gemma Arterton, pictured, actress,

35; Michael Aspel, TV presenter, 88; Brendan Foster, athletics, 73.

1 to listen to

Burnley v Manchester United, Radio 5 Live, 8.15pm kick-off: Premier League live commentary from Turf Moor.