Yes, indeed. The first four I mentioned are already flying—the SC1, the P1127, the Balzac and the VJ101c. Of these, the SC1, the Balzac and the German aeroplane are predominantly research aircraft. The P1127 could be an operational aircraft. The other three have not yet flown, but these will all feature one or other British vertical take-off techniques. I know of no vertical take-off technique of any other country that is being applied to any particular aeroplane.