Hi Alison,
It would appear that you’re planning on using a courier service to send your CF83 application form to us.
Your address for this service is:
PT Operations North East England,
HM Revenue & Customs,
Longbenton,
Newcastle upon Tyne
NE98 1ZZ
United Kingdom.
You may also now complete and submit your CF83 application form online if you prefer.
The following weblink will take you to the online CF83 form:
Apply to pay voluntary National Insurance contributions when abroad (CF83)3
Thank you.