Amazingly enough I can ID practically everyone in the film

Well, I had a tiny bit of help from the Bey Logan commentary

Updated lots of role names/descriptions.
1. Train robber (not Yuen Kwai). ID'd: Billy Ching Sau Yat
2. Train robber - Paul Chang Chung
3. Fat woman (another familar face but never remembered her name)
4. Blind girl.
5. Bank manager - Hsu Hsia?
ah, got a better one of him...
6. Wang Yu & Sek Kin's kids

7. Billy Lau's mistress
8. Young Sammo
9. Sammo's mum... you never get a good look at her (she's only in it for that one shot!). Looks a bit like Meg Lam?
10. Bey Logan informs me this is (Pauline) Wong Yuk Waan, who was married to Wu Ma... correct?
11. Helen Au Hoi Lun?
12. Philip Ko Fei
13. Richard Ng's mistress
14. Yuen Tak, Lau Kar Wing & ?
15. Mr Nostrils - still can't remember his name
16. Is this Chow Gam Kong? If so, he seems to be moonlighting as a fireman in this shot?
Might be a few more people to ID in the image gallery!
http://www.hkmdb.com/db/movies/images.mhtml?id=6767&display_set=eng