DLL is Britain 's biggest tennis operator and manages more than 500 tennis courts .
David Lloyd Leisure - Whitbread ran more than 50 David Lloyd Leisure ( DLL ) clubs in the UK and Ireland with a further number in Spain , the Netherlands and Belgium .
DLL is UK 's biggest tennis operator and manages more than 500 tennis courts .
David Lloyd Leisure - Whitbread ran more than 50 David Lloyd Leisure ( DLL ) clubs in the UK and Ireland with a further number in Spain , the Netherlands and Belgium .