 Between 1920 and the beginning of the Second World War significant additions to the Lensbury estate were made with property and land purchases on both sides of Broom Road.In 1933 the club merged with "Britannic House", a similar club operated by BP, and created a joint venture known as the "Lensbury and Britannic House Associated Clubs" – an arrangement that lasted for 30 years.In 1938 a new clubhouse was opened which comprised 162 bedrooms, a dining room, a ballroom and many other facilities.