I did check the UK Play app today on the Bt Box Pro and after a couple of failures to load with a inaccurate error displayed it now loads albeit with nonupdated initial screen into an updated home screen that includes the W channel content. No live channel streaming on the app. The links to the ondemand appear to be populated in the Youview EPG and feature in the Youview search.
(I did also check UK Play App on Roku and @stereohaven that does offer the live channel streaming )
