I doubt this was a very successful company. The only document available online in which it is mentioned is a 1950 issue of The Builder, in which we learn that consent has be given to alter H. E. Hayward's building. Was any Royalty Racket ever used by a player at Wimbledon? Maybe not.
H. E. Hayward & Co
112E Brixton Hill
Location: Blenheim Gardens / Picture taken on 15/05/2011