The Guardian has the details.

If never quite explicit, the schadenfreude is palpable as dozens of countries, days before the end of the Brexit transition period and with no trade deal yet agreed, suspend travel from the UK in response to the new, more contagious coronavirus variant.

Much of the blame was on Boris Johnson, whose U-turn on Christmas had “once more shown the yawning gulf between the prime minister’s airy promises and the real world,” said Germany’s Die Welt.