I am due to go on maternity leave soon and we have a new head starting in September. I know if it was our current head I'd be allowed back whenever I wanted and the days I wanted but I know a new head could be different. When I go back, what am I entitled to? I work 4 days currently and I want to go back 4 days - am i entitled to this or can they change it? Also, can I choose when I go back? Any advice would be great. Thank you.