UC Full Service Postal Address (for signed delivery)

Good evening,

Would anyone happen to know if this is the correct address to send post to Universal Credit Full Service if sending by recorded delivery? -

UCFS Post, Canterbury BC
Nutwood House
Chaucer Road
Canterbury
Kent
CT1 1 ZZ

I'm asking because I want to send a 'subject access request' letter asking for all the DWP evidence used in making my WCA decision. The letters they send me (and the decision letter) always has the 'FREEPOST' address on it, but, now I know not to trust them one bit, I want to make sure I have proof my letter has been received. I found that address on 'thanet.gov.uk', but I thought i'd check here first if anyone's used it.

Thank you!

Thanks Chris (and Bis). I'm really only wanting to write to them and ask for all this as it was recommended to do so in the B&W MR and appeals guide. I'm guessing though that the DWP are (at some point) supposed to send me everything before the tribunal anyhow, but i'd still like to make sure they know I want it all asap so I can see everything they've used to come to their conclusion.

Actually, i've just put that address in to google, and it came back with several sites saying it is the address -

www.rightsnet.org.uk/forums/viewthread/14791/#69909

This one says "Health Assessment Advisory Centre", would that still be the DWP though? -
chdauk.co.uk/centre/canterbury-chaucer-road/