These Regulations amend the Social Security (Jobcentre Plus Interviews) Regulations 2001 (“the Jobcentre Plus Regulations 2001”), the Social Security (Jobcentre Plus Interviews) Regulations 2002 (S.I. 2002/1703) (“the Jobcentre Plus Regulations 2002”), the Social Security (Work-focused Interviews for Lone Parents) and Miscellaneous Amendments Regulations 2000 (S.I. 2000/1926) (“the Lone Parents Regulations”), the Social Security (Quarterly Work-focused Interviews for Certain Lone Parents) Regulations 2004 (S.I. 2004/2244) (“the Quarterly Lone Parents Regulations”) and the Social Security (Work-focused Interviews) Regulations 2000 (S.I. 2000/897) (“the Work-focused Interviews Regulations”) (collectively “the principal Regulations”).