Front pages: Migration and more Nigella in papers

Image caption Several papers lead on immigration stories. The Sunday Times says Nick Clegg "has issued a stark warning that he will not tolerate any further curbs on immigration from the European Union". Following the imposition of new restrictions on benefits, he writes in the paper: "This is where we draw the line."
Image caption The Observer has interviewed the Bulgarian president who has urged Britain "to stay true to its legacy 'as a great global power that pioneered integration'". He says Bulgarian people are "raising a lot of questions today about the democratic, tolerant and humane British society".
Image caption The Mail on Sunday claims to have the only interview with Nigella Lawson following the end of her assistants' fraud trial. She has reportedly told the paper she has "toughened up" over the past year following the court battle and the breakdown of her marriage.
Image caption The Sunday Telegraph also leads with a Nigella story - it says a Scotland Yard commander has told it that the police will examine the "implications" of the TV cook's evidence about her drug-taking and consult with the Crown Prosecution Service. The paper's big picture is of sports broadcaster David Coleman who has died aged 87.
Image caption Underneath a big photograph of Prince William backing its Christmas charity appeal - on endangered wildlife - the Independent on Sunday leads with Lockerbie, 25 years on. It says Jim Swire, who lost his daughter, has accused the government of "covering up key facts" about the attack.
Image caption The Daily Express claims a royal exclusive, telling readers some family members "will have to sleep in cramped servants' quarters" at Sandringham because the Queen has invited so many to celebrate Prince George's first Christmas. It will be "the biggest gathering of royals for decades", it adds.
Image caption The Daily Star Sunday says it has "found evidence" of cocaine being used at one of Prince Harry's favourite nightclubs. Elsewhere, the paper is one of the few to squeeze the late breaking news from Strictly Come Dancing on its front page. Abbey Clancy, it says, is the "queen" of the ballroom.