Many thanks @harvey28 . These codes seem to work - but only from the test button in the web configurator for my Remote3 not the remote itself! I have the same issue with my Arcam AVR30. I’ll post a separate topic for that.
Thanks @DaveLowther . From what I can tell the Sky Q remote also works with the Sky streaming puck.
Mark, if you want the RC6 codes take a look at https://forum.arduino.cc/t/here-is-info-on-skyq-ir-codes/1368885