MCA accepted countries and Certificates of Competency (CoC) can be viewed at https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/294275/CEC_Accepted_Countries.pdf
If you have any questions on the SCC, you must contact Roger Towner (Registrar General of Shipping and Seamen at the MCA) and as he is the most senior person at The MCA dealing with SCC he can answer any of your questions.
His office is at Tel : +44 (0) 23 8032 9328
Seafarers, Cooks and Chief Cooks: Check Out New Certification and Qualification Info! – See seafarers_cooks_and_chief_cooks_check_out_new_certification_and_qualification_info
More information regarding Marine Cooks can be obtained at: http://www.amsa.gov.au/seafarers/int-qualifications/certs-endorsements-recognition/cert-of-proficiency-marine-cook/index.asp –
For chefs trained in NZ see http://www.maritimenz.govt.nz/commercial/certification/documents/Ships-cook-certificate-SCC-form.pdf and also http://www.maritimenz.govt.nz/commercial/certification/maritime-labour-convention/default.asp
-see write up at