Beneficiaries sitting pre-employment drug tests continue to produce a tiny failure rate.

Government figures show beneficiaries have failed only 466 pre-employment drug tests in the past three years.

Mr Hoggard said some dairy farmers did pre-employment drug tests, but he was not sure how regular it was.

The Times Co said the offer is contingent on a background check "which has already satisfactorily been completed" and a pre-employment drug test.