The problem is the virus is rampant in Italy from where it has spread across Europe. There are probably 10 times the number of infections than have been announced as many carriers are asymptomatic. The UK should start banning all flight arrivals from Northern Italy and force people who've been there to self-isolate.
Too late to ban flight arrivals from anywhere.
It didn't spread from Italy. It arrived from China. Remember the scout leader from Brighton? He had the virus before it was detected anywhere in Italy.
Italy was the only European country to ban flights from China but it still arrived in Italy.
The virus is probably even more rampant in England but just hasn't been detected yet.