Why didn't they just close the borders in the first place/put everyone returning to the UK in quarantine for 2 weeks. It would have saved so much fuss and bother.
Remember when that British Nurse came back with Ebola, they decided to nip it in the bud then and there. They didn't say to her 'Go home and infect your friends and family.................then 3 weeks later, when the virus has spread, we will do something about it and close all schools/pubs etc.
Instead they went out of their way to contain it.
I understand that China didn't give us much of a heads up, but even so.