All Access does not seem available in the UK, or if it is I am not seeing it as being available in our Account Settings.
The Ancestry website says ……. All Access includes all records (UK and international) on Ancestry®, as well as memberships to Forces War Records and Newspapers.com™. The All Access membership is one of four membership options; the other three are UK Essentials, UK Premium, and UK Worldwide. To start a free trial, see Ancestry® Free Trials.
To upgrade to the All Access membership visit your Account settings page, then go to the Membership section.
.
.
So it looks like it is Worldwide + Newspapers + Forces War Records (Fold3?).
The Newspapers and Fold 3 were (are?) available via their own subscription and I tried both and both were of limited use for me. Find My Past certainly has better Newspaper resources even if the searching feature was designed to be unfriendly.
British Newspaper Archive for me is the best website for searching local Newspapers.
As for Family Plan, I get an error message displayed when I click on the link on the Ancestry Website.