On Radio 2 on Tuesday 12th February at 10pm Johnnie Walker presents a programme tracing the history of Roxy and of Bryan as a solo artist,
using only BBC archive material including interviews, sessions and live music from the past 4 decades.
http://www.bbc.co.uk/programmes/b01qjhpbPresumably this is an entirely different programme from the Ferry interview that Walker presented on Radio 2 over Christmas, which seemed mainly designed to promote "The Jazz Age" and which many of us on here were fairly critical of.
It'll be on the BBC I-player for 7 days after broadcast for those who miss it to listen to. I imagine this won't apply if you're outside the UK, unless things have changed recently.