feat: Add BBC instance

Co-authored-by: Tom Sadler <thomas.sadler@bbc.co.uk>

Author: michael-basil

patterns/2-structured/circle-communities.md

@@ -52,6 +52,7 @@ Embracing this pattern helps InnerSource programs become vibrant, effective and
   * Affiliated with the Mindset, Agile and InnerSource sub-communities within _InnerSource Dojo from SAP_
 * [InnerSource Dojo from SAP](https://www.youtube.com/watch?v=fXoVm5iTSCc)
 * _Unplugged InnerSource_ sessions within the _Reuse & InnerSource_ workgroup of [SAP Cross-Platform Architecture](https://community.sap.com/t5/technology-blogs-by-sap/cross-product-architecture-embracing-conway-s-law-for-better-software/ba-p/13648600)
+* [Guilds at the BBC](https://youtu.be/MyYgk-jdjSw?t=511)
 
 ## Status