In reply to Pedro:
If you can call them outdoor shops (usually due to lack of any real expertise) Millets, Blacks, Tiso, Ultimate Outdoors and Go Outdoors are all owned by the JD Sports Group.
Cotswold, Snow and Rock, Runners Need and Cycle Surgery and owned by Outdoor And Cycle Concepts.
The likes of Outside, Rock and Run, Needle Sports etc. I think are independent companies.
Post edited at 08:06