Tennis was one of the first sports declared safe to play when the restrictions were eased in May, and at the time the club shared that they had seen 14 new members sign up in that first week back alone.
Since then, the club has seen further interest, with about 35 new members since tennis was given the go-ahead to restart.
Bill Skead, who manages City of Peterborough Tennis Club on a voluntary basis, said: "The Club is very busy at the moment.
"Unfortunately we can't open our two indoor courts at the moment, so our three outdoor courts are usually fully booked seven days ahead.
"The Lawn Tennis Association have just launched a new marketing campaign - “play your way’ - which should increase interest further, so hopefully we’ll be able to open our indoor courts soon!"