I went to Southampton archives armed with Henry George Hull's number and found the following....
2x C.R. 1 cards. These contained, amongst other things, info like height,eye colour, hair colour which were all previously unknown.
2x C.R.2 cards. One states- rating greaser, the ship 166290 ( Queen Elizabeth I've found out) and date of engagement 31.7.40. Te second has rating Elec Attd, ship Mauretania 124093 and (date of engagement crossed out and replaced with date of Dis) 30.3.27. On the back of this 2nd card is the following
143667 18.2.22
124093 6.6.23
cont: issued ex Mauretania 12.5.31
Shell Brit 4 160497 31.12.37
162316 20.7.40
All I have done with this is to find out the names of he ships.
1x C.R.10 card. This gives his identity certificate number 476862 , rating of Fireman and some other info like name, D.O.B etc. On the back is a photo ( the first that I' ve seen of him) and 143283 18.9.20 and 129547 26.9.21