Due back in work next month.
I’ve just checked my tax code with HMRC and they’ve been informed that my employment ended a month after I left for maternity leave.
The only thing I can think is I’ve been f**ked over by my manager 
I wasn’t entitled to maternity pay as weren’t with the company long enough but advised them that I wanted to take the full 52 weeks maternity leave and return on ... date.
I had a meeting with my manager before I left who filled out the HR forms and took my MATB1 form who then said they would send the pack to HR.
The only thing I can think is they never sent the pack and I’ve been on maternity leave completely oblivious 
The worst thing is this manager has been in touch throughout the year keeping me updated and has arranged my retraining for next week. Surely they would know theoretically I’m no longer employed! I’ve asked him for login details and passwords ready for my return next week but he keeps ignoring my request just saying see you next week.
I feel like I’m being strung along! Payroll informed HMRC I was no longer employed a month after I left.