Welcome to PPrune!
CRM = Cockpit Resource Management
Glass cockpit is named so because the instruments for the pilots are "under glass" or on computer screens rather than as analog dials - much better and easier to read etc.
Why question the British charter airlines (unless you meant "chartered", big difference) They're fine, thank you.
By the way, next time, be sure to put your thread (topic) in the right forum!!!
SFly