Covid-19 cases, Matt Hancock has confirmed.They are relied on by thousands of people in Britain and while lockdown restrictions may be tightened, the Health Secretary committed to keeping the system of support bubbles and childcare bubbles.Mr Hancock told a Downing Street briefing the government have "ruled out" removing them, adding: "I know how important they are to people. "They're an important part of the system we have to support people."The Health Secretary added that the bubbles are for "individual specific people" and they have to stick to the same bubble once they are in one.