I really should pay attention more....I hadn't realised that Sylva had sold the design rights for the Striker to Raw Engineering back in 2002.  Raw's web site has a few glitches in it but you might want to take a look.

New (se7en) kid on the block is Chevron Racing, which actually has a long racing pedigree going back 40-odd years.  They've just announced the Chevron B1 Mk2, which is an updated on the Mk1, though 30+ years separates the Mk1 and Mk2.  There's also a review of the Mk2 at ClassicRallies.com.