Cut out the middle man and publish your personal details directly on the internet.
Forms like that are a direct result of the government creating jobs out of nothing, there is a massive raft of bureaucracy created for no other purpose than reducing the dole queues at the expense of tax payers - what delicious irony. For instance, every year I get a form from the VOA whose purpose is to compile and maintain a record of business rates throughout the country. Why?
In the coming years our lives will require us all to fill in more and more forms so that we can be categorised and, more importantly, taxed.
As for this form, I have never seen one before or have no idea why it is necessary. Your job 'history' has no bearing on the amount of tax you pay now.