PA MediaThe government has given itself powers to hold migrants for longer periods at the Manston processing centre in Kent.
It comes after overcrowding at the site this autumn led to some migrants being kept longer than the 24-hour legal limit.
Under new rules, people can be kept there for up to four days if offered more extensive facilities.
The Home Office said this would give staff longer to process arrivals and conduct checks during busy periods.
An official inspection of the centre in July found the length of detention was “far too long” and “often” longer than the 24-hour period.
The site, a former RAF base, had been intended to hold up to 1,600 people, but there were around 4,000 migrants at one point in late October.
