This is an old cool box and ice packs that belonged to my late uncle. For all I know it could be 30+ years old. I've used some of the ice packs but not the box itself as we already have one, so I can only assume it's still effective.
The external measurements are 27 x 37 x 39.5cm high. Internally it measures 22.5 x 32.5 x 34.5cm.
We're in Petersfield.