Clay Ground Recommendation near Portsmouth

[Pippin89]

Hi all. Can anyone recommend a clay ground near Portsmouth (within 20 minutes) that could handle a large event? I am a member at Southdown but its over an hour away which I think is too much for what I need. Basically I am organising an event for colleagues at work. It would involve leaving the office at 3.30 on a Friday afternoon and going to do a clay shoot and I think Southdown is just too far and people will lose interest due to that. Hoping for somewhere closer to get the most involvement as possible. Max potential of 50 people, but more realistically will be 20-25.