Philip,
Have you tried ... https://milandigitalaudio.com/1877-sali ... al-willis/.
According to the /Downloads page ..... https://milandigitalaudio.com/1877-sali ... 13677ceb29
Salisbury Trial Download
Download a free trial version for the complete Salisbury Cathedral Willis organ. Contact us to request a trial iLok license which we will deposit in your iLok account. (Trial requires Hauptwerk v5 or higher and an ilok account).
Stephen