Ministers continue to debate whether to allow some form of household mixing over Christmas - but scientists have warned it could come at a cost.Scientists have suggested that a five day period of eased restrictions over the Christmas weekend would need a 25-day period of tighter restrictions to follow.The government is under pressure to announce its plans before the national lockdown is lifted on December 2 - but is facing criticism from experts who say easing measures could create 'substantial risk'.Meanwhile, further results from the Oxford vaccine trial show that it produces a strong immune response in older adults.The professional sports sector is today awaiting an announcement on a £300 million rescue package, while testing in care.