Test events were held throughout 2011 and 2012, either through an existing championship such as 2012 Wimbledon Championships or as a specially created event held under the banner of London Prepares.
Banyak uji coba dilaksanakan sepanjang 2011 dan 2012, melalui kejuaraan seperti Wimbledon atau acara khusus di bawah merek London Prepares.