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I can't answer your question, but a word of warning: If you're moving a large site to https://, your rankings will drop for 2-8 weeks depending on the size of your site. We did this for an ecommerce site with 60,000 SKUs, and our rankings tanked for 6 weeks. It's "normal", but Google won't tell you how badly your site will get slammed. Be prepared. A few very important suggestions: Make sure that you set up http:// and https:// properties in Google Search Console. Create a thorough and complete .xml sitemap(s) using the http:// prefix. Submit the sitemap to the https:// GSC property. This will help Google find and map the redirects more quickly. Keep an eye on search console for the count of http and https pages indexed.  Ideally, the http count should go to zero. Make sure your redirects are set up correctly in your .htaccess file (Apache). There are several sites that will do 301 traces (google "301 tracer"). Keep the redirects at 2 hops or less. Make sure that redirects are 301. 302 is the .htaccess default, so make sure you call out "301". There are several redirects that need to occur: http to https non-www to www or vice-versa URLs with a trailing slash to without a trailing slash or vice-versa. When you make the cutover, test all combinations of the above redirects - there are 6 different combinations of the above bullets to test. (http with and without a trailing slash are 2, and with and without www for example)

Hi Anthony, Thanks very much for your help. What you suggest sounds reasonable. Many thanks for the help! Best

Thanks a lot for your reply Stephan! I would be super intertesting to read a little more around the subject. Do you have any studies or cases you might refer me to which describe the flow of link equity to "page C" from "Page A"? Many thanks

Hi Bernadette, Thanks for your input. I guess my question, put more succunctly would be- when does "personalisation" cross the line to become "cloaking"? And how to avoid Google confusing between the two. By definition personalisation involves showing one set of content to one set of users, and at least one other set of content to at least one other set of users. I totally understand that essentially Google will only see one set of content as a "first time" user, but given than that content will not be the same as the content all other users see, I can see that at some point Google might mis-interpret this as a maliciouos technique. Maybe my concern lies in y ignorance over exactly HOW cloacking is carried out technically. Thanks

Thanks for the help everyone!