Just so as we don't get complacent here in the UK, the victim changed flights in Brussels. That put him one contact and one Eurostar journey from London.
The simple reality is that this will get out sooner or later, either by stupidity or malevolence. It has already escaped from its first locus into the rest of West Africa, and this Texan incident was just a taster of what happens when, sooner or later, someone knows better. The UK is very much in common with the rest of Europe, although our longer-term provision is better, in that if you even think you have a problem, you see the quack for nowt.
On the other hand, the question then might arise about the scale of the epidemic overwhelming the medical resource. That may lead to neighbourhood quarantine: we nearly had to go there in the Spanish Flu epidemic of 1918, indeed within a quarter of a mile of where I write this in London is an entire housing estate which has only just been returned to private use by the NHS, inside the last 10 years, which was built for these victims. It still has just two entrances, supermarket and medical centre. One wonders if it is still on the books as a reserve...at least the local kids would be happy, as the troops enforcing the enclave would have to be based in the school opposite.
1918 was bad, coming on the heels of the death toll of WWI. But it was not as bad as the death toll of the cumulative waves of plague in the 50 years which followed on the Black Death of 1347-9, which caused complete economic collapse in some parts of Europe, and therefore came within a hair's breadth of doing so across the entire continent. Between 50 and 75% of the population died, more slowly, and the way found out of the economic collapse was specialisation, a policy which we have continued since. However, we have taken it far further: what would happen, say, if the whole of Silicon Valley died?
Or the people who keep a continual process plant running smoothly?
It may be we have futures as acoustic performers after all...