Wishing you all the best Puma Fixer.
I would suggest that you keep a close eye on your CPD path whilst in Personnel Branch, ensuring that you don't finish up on the outside with HR as the only career option.
Google "Urban dictionary: Human Resources" for some thoughts on HR as a career. To some extent a comedy take on the "profession" perhaps, but many of the comments will sadly ring true for those who have worked in the corporate sector on the outside.
Plan your path wisely, all the best.