Pretty accurate info given there yet again tj! Missed a few names (like my Sifu lol!), but the earlier generations were not 'public' teachers I suppose.
Has anyone ever considered that because Sifu Lau was actually 'from' the mainland he 'had' to go through Ip Man in order to teach here in the UK. Obviously for this to happen, someone had to vouch for him and maybe that was Lee Shings role. Now I don't know this for fact, but I have heard it along the way, as it may have been required for most Sifus to be registered in Hong Kong.
Registration, even then, didn't always mean that you were actually taught by Master Ip Man.