irregular

As for Sir Keir, he has been careful to put no figure to his newly-issued promises to reduce both net migration and irregular migration.

Statistics that are available show that Zimbabweans account for 98% of what is termed "irregular migrants".

"I'm unable to sit or stand for a long period of time and I have a very poor and irregular sleep pattern," she said.

In one case, from November 2012, a baby boy collapsed and water was subsequently discovered in his breathing tube – a highly irregular occurrence.

Although the EU says irregular migration has fallen this year - by 64% this year via the Central Mediterranean route - governments across Europe are under pressure to curb the number of arrivals.