Correct Address for making payment by cheque?

Hello I am planning to make voluntary contributions by cheque prior to my planned retirement date later this year. I also made payments last year by this method. The address I used and that which is on the Gov,UK page is: HM Revenue + Customs National Insurance Contributions + Employer Office BX9 1AN * However * On my receipt letter from my last payment it states, Quote: "Please note our new address is;" Government Banking & Payment CT HM Revenue & Customs BN9 1XD It adds - "If you write to us but don't use this address we may not get your post." When I telephoned the call centre recently, the agent I spoke with wasn't aware of the latter address. Can a mod or whoever please confirm which is correct to save my letter going on a tour of the offices. Thanking you in advance for your help.

Hi ChrisS1958,
I can confirm that our postal address to send cheques to is:  
National Insurance Contributions and Employer Office,
HM Revenue & Customs,
BX9 1AN.  
Sorry for any inconvenience caused.
Thank you