Hi Vicki,
In Bradford on Avon, we use Gopak tables of various sizes. They are about 70cms (2 ft 4in) by 90cm (3') / 120cm (4') / 180cm (6'). We inherited the largest of them from Bath Meeting House 4 years ago and had the others for at least 10 years, more likely 20. They're not cheap, but they do last. Ours get a lot of use, several of them being used by an art class most Wednesday mornings, others for children's activities, Quaker meals, table for Clerks, etc. etc.
Best wishes,
Klaus Huber
Resident Warden, Bradford on Avon