Unfortunately, apart from a hard to find 1/72nd scale kit of a Hart from AZ Model, no one seems to make an off the shelf version. I'd really like to build one in 1/48th scale but that's not an option. There is a 1/32 scale reesin kit by Silver Wings but it costs about £100, which is way out of my league even if I knew how to stick it together.
A final option would be to build a 1/18 scale rubber powered flying model from a kit I've seen on Ebay. I'd not bother to use it for flying but would detail it up to make it look as much like a scale model as possible. In the meantime, I'll be saving my pocket money to buy one of the restored Hawker Hinds that were found on a scrap heap in Aghanistan.