Hoping someone can advise here.
I am out of work as my lease car came to the end of it's run and I no longer worked enough hours for another one. I need my car to do my job but could not increase my hours as my son is autistic and does not sleep very well. Upshot is I am usually exhausted and work the hours I do to try and keep a happy medium. So - no car = no job 
However, I managed via ebay to buy an old car, sadly too late to keep my job but it does mean I can do some ad-hoc work for my employer (my job has been filled so I can't go back to it). They are able to offer me occasional work though and I am hopeful of some other work too in various places.
However, if I claim housing benefit, tax credits etc, how do I keep on top of making sure I don't get overpaid by them. I am assuming with housing benefit I can just send copies of any pay slips I recieve but tax credits seem to be a whole nightmare in this situation as they seem to want to know an annual amount which I won't know. Am guessing some people here must be self employed or work ad hoc and will know these things!