WWE has been making moves leading up to the show at Royal Albert Hall.
Over the last month, WWE has been preparing for their show in London at Royal Albert Hall which will include the culmination of the WWE United Kingdom tournament and a United Kingdom Championship match. The company has also been making strides in what Triple H calls "Global Localization" which means WWE will be trying to create a regional brand.
WWE has reportedly signed Toni Storm and Jinny who wrestle in the United Kingdom frequently. Both of those wrestlers have been reported to be signed to a contract which allows them to wrestle for other companies and WWE. According to Wrestling Observer, WWE only prohibits these wrestlers from performing at Revolution Pro because of the relationship with New Japan Pro Wrestling.
Wrestling Observer also reports WWE has signed Charlie Morgan and Nina Samuels to "extended tryout" contracts which keep them from working with ITV World of Sport but is essentially an offer of some tryouts to join WWE. WWE has apparently signed twelve wrestlers who were supposed to be on World of Sport.