Wow! Great picture. Think I can make out the following, Groves, Winder, Newman. I can't remember any of the others right now.

If it helps, top picture, second from left is Leslie Legg, Purser. Far right is Fred Lower Chief Steward.
Bottom picture back row left is Curly Palmer, Chief Steward, next to him is Sheppard, Radio Officer, far right back is Gibson, Engineer, front left is Winder, Chief Engineer. Centre is English, C/O and end right is Baldry 2nd Mate.