Some people arriving in the UK via small boats or the back of lorries will be electronically tagged as part of a Home Office trial programme.
The department said the 12-month pilot, which began on Wednesday, will test whether electronic monitoring is an effective way to give immigration bail to those who arrive in the country using “unnecessary and dangerous” routes.
It comes after the European Court of Human Rights (ECHR) on Tuesday granted an injunction that resulted in a chartered aircraft to Kigali being unable to depart Wiltshire.