I am due to go on maternity leave in the middle of January. In May/June, I have been offered a chance of exam marking (Something I do each year) for AQA and Edexcel. Would undertaking this work effect my maternity pay? I am doing this on a self-employed basis; usually, this would not effect my job within the school as there are no face-to-face meetings, and everything is done online. Marking would be done outside of school hours (evenings and weekends) and would not usually interfere with my school related work. I want to do this to fund the unpaid three months at the end of the maternity leave period, so I can spend the full year with my little one rather than rush back to work due to lack of income. Please advise.