British Prime Minister Boris Johnson said on Sunday tougher lockdown restrictions were probably on the way as COVID-19 cases keep rising, but that schools were safe and children should continue to attend where permitted.<br /><br />COVID-19 cases in Britain are at record levels and the increase in numbers is fuelled by a new and more transmissible variant of the virus. The government has cancelled the planned reopening of schools in and around London but teaching unions want wider closures.<br /><br />Much of England is already living under the toughest level of restriction under a four-tier system of regional regulations designed to stop the spread of the virus and protect the national healthcare system.<br /><br />But, asked in a BBC interview about concerns that the system may not be enough to bring the virus under control, Johnson said restrictions "alas, might be about to get tougher".