Hi, I'm sure you've probably found somewhere now, but I can offer a fab place in Dore (S17) Stabling for 30 horses, huge indoor school. Summer & Winter Grazing. The rent is £100 which included the use of the school. There is fantastic hacking aswell. Give me a call on 07540 758253, or nip down and have a look. It's Shorts Lane, Dore, Sheffield.
Thanks