Hello Jimbo,
Thank you for sharing your experience and solution regarding installing Adobe Flash Player for Firefox on Windows 7 x64. It's great to hear that you found a version (10.0.12.36) that works well with Firefox.
If anyone else encounters issues with Flash Player installation for Firefox on Windows 7 x64, they can follow your steps:
1. Download Adobe Flash Player version 10.0.12.36 from the Adobe site.
2. When installing, specify Firefox as the browser.
3. If you are using Firefox already, it will install directly.
Your attached screenshot of the BBC clock confirming that the Flash plugin is working is helpful for visual reference.
If you or anyone else has any more questions or needs further assistance, feel free to ask!
Cheers!