HR are a waste of time, they're certainly not there to help you the employee. Been suggested try a union but sadly the unions are in the back pocket of the employer as well( find out who it is and I bet he/she is the untouchable one in your place) best thing to do is face up to the bully, politely, controlled but with real meaning.
Anyone else finding it really hard in this heat? Thought I would try a new way and got out of bed this morning at 6.30am and did a tough wee 5 miler, went well and Sun wasn't out but took a mile or so for the legs to actually wake up!!