Weslake R & D was founded by Harry Weslake, a cylinder head specialist who had been instrumental in modifying the side valve Standard engine used in the first SS Sports Car. He also designed the cylinder head for the overhead valve version of the Austin series A engine that was used in the Morris 1000 and the Mini and received royalties on each of these engines manufactured. He was involved in the design of every Jaguar engine up to and including the V12 of the early 1970s. He also designed the Straight-4s engines for the 1958 Vanwall Formula One Grand Prix Car, an engine that was using a lot of technology and experience from a single-cylinder Norton motorcycle engine. The Vanwall car went on to win the 1958 F1 Constructors Cup. Harry Weslake died in 1978.
Although Harry did quite a few modifications for the 'A' series cars he is also well remembered for creating the first eight post head in the late fifties it has also come to light the Morris engines actually produced one as well, as these are rarely seen they have all been called Weslake heads but in reality the Weslake one had round exhaust ports and the Morris one had square exhaust ports so if you do see one you will be able to tell the difference.
The one below that the mini & metro centre let me photograph is the Morris eight port head and not the weslake one I at first thought so if anyone has a photo of a genuine Weslake 8 port head they have it would be useful as I can post it up alongside the Morris one for comparison.