Yes, pervious employment, references required. Commonly you are recruited through Adecco Recruitment Agency.
No they are very open with who they require and give all training doesn't take very long
No they don't, my manager has never sent off for my references nor have I filled in an application form or got a contract.
Yes the company do check previous employment background and References
Dbs check and occupational health check. Recruitment are very good and will keep your updated throughout the application process and interview process.