Old Tennis Balls, Please

Dear Members
I work at The Pavilion Study Centre, a Pupil Referral Unit in Barnet (for children who can't manage in a mainstream school).
We are holding a sports day for our students and are looking for used tennis balls for one of our events. 
Please could you donate for collection from the club by Wednesday 14th July. Please leave your balls in the coal scuttle on the tennis pavilion porch. 
With many thanks and kind regards
Lesley Graham 
(wife of former long term member, Teddy Graham)