What happens (or should happen) when someone flies in a private jet from Delhi to Luton ? If a few people who are wealthy enough to afford a long haul private jet end up in the Holiday Inn Express (and not a 5 star hotel !), word will get round. Somebody who is rich and powerful will be wondering right now whether then should just take a risk and hope they can slip under the net
The threat of quarantine, and thus the deterrence factor against travel, will be credible only if it's followed through