I was offered a job at Cheltenham
The company then outsource the vetting process to a company, you have to evidence every job you have done, even those you might have quit from. They will want references from every one, even those you quit from, and they use a 5 year HMRC check to validate, so you HAVE to declare every job. If you get any bad references they will rescind the job offer even if they offered you a job and start date.
Be VERY CAREFUL if you have a poor work history in the last 5 years as you will probably NOT get a job there.