looking for a tennis ball machine to rent.. or maybe buy

Hi,
I am on a low level tennis team in Essex Cty, certainly not a natural at it but I really enjoy playing. I need to work on my ground strokes and am looking to rent or possibly purchase a tennis ball machine that I could take to the public courts nearby. Any ideas?
Thanks
Isabelle

Hello Isabelle, welcome to tennisw.com! :) I'm not sure about the tennis ball machines, but just wanted to welcome you to the website. You might try posting in our Tennis Equipment forum about the tennis ball machine as you may get some good info in there.