Burton Latimer Lawn Tennis Club.
Corby S & L Lawn Tennis Club.
Desborough Lawn Tennis Club.
Earls Barton Lawn Tennis Club.
Ferrers & Rushden Lawn Tennis Club.
Finedon Lawn Tennis Club.
Geddington Lawn Tennis Club.
Kettering Lawn Tennis Club.
Oundle Lawn Tennis Club.
Rockingham Lawn Tennis Club.
Spinney Lawn Tennis Club.
Thrapston & District Lawn Tennis Club.
Wollaston Lawn Tennis Club.