Depends on experience. Depending on your hours you'll either join as SO, FO or SFO.
SO basic £41,000 no sector pay
FO basic £49,000 plus sector pay @ £18.74 per nominal sector
SFO basic £59,000. All subject to a roughly 5.5% pay rise in October.
Again command depends on previous experience. Once you have been in the company 6 months you can start the ball rolling for command, process takes roughly 18-24 months.