Covid-19: UK Border Health Measures

Sir Patrick Vallance has said that the crisis escalated in this country as a result of many, many cases coming from Spain and Italy during March. So clearly, the triage system was not working. The Home Affairs Committee was also told that in a 10-day period from 13 to 23 March, up to 10,000 passengers with coronavirus are likely to have arrived at our ports and airports. The Home Secretary has still not published the science that we were promised behind those decisions. Can I urge her now to do so and to tell us her estimate of the number of people who, in the next three-week period, are likely to arrive in the UK with coronavirus?