Many thanks Richard, Dominique-Alain, Lisa, Adrian, Sasikala, Nassima and Ben for offering to help too. According to the Moodle 3.8 QA testing dashboard we're currently on 15% (88) tests passed and just one failed, 4 days into the cycle! Great work everybody!
Remember if you are using the QA testing site for running tests and need admin access, just send me a message and I will share the admin login.