Back again

I've noticed when I start the ignition (press the start button) there is a "click click click click" sound that I can hear coming from the engine/drivers side when the drivers side door is open.

Any ideas on what this could be? I went away for a month and on return had to have the car jumpstarted by the AA who told me the battery is in great health but suggested that the alternator wasn't giving off the right voltage and that I might need to look into getting it replaced.

Wondering if these issues are connected ... I'm going to check the ground earth cable which was suggested by someone but wondering if there's something more obvious