I don't suppose your in a Trade Union.
Does your boss have anyone above them you can approach?
Do you have a Written Statement Of Particulars/Employment Contract?
If more than 5 people are employed the firm/company must adhere to the Management Of Health and Safety guidelines......these contain many requirements of your employer, including protection from bullying and harrassment.
The 1974 Health and Safety at Work Act dictates that your employer has 'a duty of care' toward you and is enforceable via the Health and Safety Executive and even an Employment Tribunal if need be.
I would hope the company have a set of policies and procedures/protocols.
If finances are involved you should definitely keep a record of everything you personally are doing.
I'll not go on and on but will simply end by advising........if you have concerns of such a magnitude and are not a TU member or have no higher workplace authority to go to seek advice from either CAB or ACAS.
Good Luck.....Doctor