Flicking through the TV channels the other night and caught a glimps of a Terrace house on Grand Designs Live. In the small narrow garden the owner had put in some patio decking which lifted up to show waterproof storage "boxes" underneath (no more than 12 inch clearance). I too have a small garden with a space problem and wondered if there are product available or if it was a bespoke design. Cheers in advance.