Public Employment Service:
Jobcentre Plus Offices
Department for Employment & Learning (DEL) Northern Ireland
https://www.gov.uk/government/organisations/department-for-work-pensions
Pension Authorities:
International Pension Centre
https://www.gov.uk/state-pension-if-you-retire-abroad
Department for Work and Pensions
https://www.gov.uk/government/organisations/department-for-work-pensions
Laison Office for Posted Workers:
Posted Workers National Liaison Office
Department for Business and Skills