Does anyone recognise the actress in this 1968 video youtube.com/watch?v=-D24yIYiVBc "Eloise" by the late Barry Ryan?

I can't be 100% certain but it looks like Jean Shrimpton.

https://groovyhistory.com/jean-shrimpton

The outdoor shots at the beginning are in London's West End. You just see a bus passing the cinema, and then goes to Great Windmill Street. https://www.google.com/maps/@51.5109121,-0.1339933,3a,75y,9.15h,90.33t/data=!3m6!1e1!3m4!1sKcEuSNW20OEZOJlMQShVgA!2e0!7i16384!8i8192

I've created a png file with Jean Shimpton and the lady in the video, side by side:
https://www.gtho3.com/eloise_shimpton.PNG

The actress is the one that re-appears often throughout the video. I've been trying to find her name for the best part of a decade (the video on that youtube link has only been there for three years).

This webpage has still shots from the video. The actress, or model, is shown at 1:06, 3:19 and 4:26
http://www.clip-vip.com/Barry-Ryan-Eloise-music-video-clip-9077.vob.html

Cat Stevens posted this when Barry Ryan died in September 2021:

Yesterday a good old buddy of mine passed away, his name was Barry Ryan. Our time together began back in the 60's when he and his twin brother, Paul, were all tuxedo-suited, poppy teenage stars. I had written a song for Paul and Barry Ryan called 'Keep It Out Of Sight' and so we began hanging out. Their step-father was the major entertainment agent, Harold Davidson. We were prone to raving-a lot. It was through Barry I met Patti D'Arbanville."

https://www.thesun.co.uk/tvandshowbiz/16294667/barry-ryan-dead-cat-stevens-tribute

I've created a webpage showing Patti D'Arbanville (aka Lady D'Arbanville) and the lady in the video side by side:
https://www.gtho3.com/Eloise_darbanville.PNG

Here are some other shots of Lady D'Arbanville:
https://www.imago-images.com/st/0061988924
https://www.superstock.com/asset/patti-arbanville-head-shoulders-publicity-portrait-film-modern-problems-th/1838-16289689
It might be her, but it's not a 100% match.