Outdoor advertising is sometimes regarded as being an expensive way to reach potential customers. However the rates offered by UK sports venues are often very competitive.
Sport-Space.co.uk is a database containing most of the larger sports venues in the UK and details of the advertising inventory available. The database includes images of the venues and a system for messaging the venue sales teams directly. You can search it by sport/division or geographical area.
If you're planning an outdoor media campaign, the database makes it easy to identify suitable venues and get in touch with the relevant people.