Yes, it's a 3 wheeler, similar in design to the Morgan 3 Wheeler but with ever so slightly more up to date styling. Note, alloy wheels instead of the wire wheels on the Morgan.
Castle Three has only released design concepts so far, in partnership with Xenophya Design, designer Charles Purvis and engineers GTME, but intends to raise funds to get concepts built and production started.
Three engines, from third party suppliers, are under consideration - two V-twins and one flat twin. The company only intends selling completed cars rather than kits.
Castle Motor company and the name Castle Three are both revivals of a 1920's manufacturer. Take a look at the 1920's Castle Three here. It was then a rival to the original Morgan three wheeler.
Sounds interesting. We'll report back as and when further Castle Three news comes out.