WHO’S WHO IN MAYFAIR MELEE

LADY COLIN CAMPBELL, 66 BACKGROUND: Daughter of a Jamaican trader. STATUS: Divorced from Lord Colin Campbell, son of the 11th Duke of Argyll HOME: Castle Goring, a dilapidated Sussex castle she bought for £700,000 last year. PAST FORM: She once sued her own lawyers, with the judge in the case saying she had ‘attacked everybody in sight in violent terms’ and made every allegation ‘fortissimo’. BASIA BRIGGS, 55 BACKGROUND: Daughter of a Polish count.

STATUS: Married to stables owner Richard Briggs.

HOME: A multimillion-pound house off London’s Sloane Square.

PAST FORM: She once secured a grovelling public apology from Downton Abbey creator Julian Fellowes after he wrote her an extraordinary, five-page letter complaining that she had ignored him at a party.