A man is seriously ill in hospital after he was repeatedly stabbed when he confronted burglars inside his home.
Detectives believe the 47-year-old was trying to protect his wife and daughter after they were woken by a noise in the early hours of yesterday morning.
Olivia Paterson has been at the family home in Luton.
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A lamp in the tower which houses Big Ben is to be switched off for the first time in more than 70 years.
Sir Bruce entertained audiences for more than seven decades.
Work in the tower will also pause over the bank holiday weekend.