No it's not going to happen, bob. But not because we cannot prove they set off from France. We have the technology to read the headlines in a newspaper being read by someone on Calais High Street. We can easily track migrant boats leaving France and prove exactly where they left from. It will not happen because there is no political will in the UK to tackle the problem. It's been lumbering on for years and will continue to do so.
labour party liberal party open borders and other assorted bleeding hearts will not be happy till the uk is one giant island of concrete and steel, except for areas where they actually live, a collapsed and sold off nhs, 0 pensions except for private pensions, erm it will be like america or parts of it, one giat melting pot where everyone is friends minus ones in gated communities, but we can all feel good that we gave to the third world, by becoming a third world country.