There is no such thing as "Wikimedia Foundation UK". There is "Wikimedia UK" (officially "Wiki UK limited"). The Wikimedia Foundation is a US-based organization that runs the servers that host Wikipedia and handles the associated administrative and financial matters. Wikimedia UK is just a local users' organization, also known as a "chapter".
By writing "Wikimedia Foundation UK", the article writer seemed to imply that Roger Bamkin was a powerful person regarding the management of Wikipedia / Wikimedia sites. This is not the case.