I am an advisory teacher working for a large city council. In September I verbally gave my line managers notice that I was thinking of retiring at Easter 2021. Today I have been sent an email from one of them telling me that they need an official letter from me saying that I am retiring on 31st March 2021 so that they can start the recruitment process to replace me as they are keen to get an advert out. Things do not happen quickly in my LA! However, I am a bit unsure about whether they can ask me to do this as I may change my mind in the meantime. I thought I would only have to resign by 28th February 2021 to leave on 30th April, even though this is a few days after we return from the Easter break. I am happy to work those few extra days. Also, can I start the application process with Teachers Pension to have my pension for 30th April 2021 even if I have not sent in a resignation letter until 28th February? I do want to cover myself in case something happens and I have to stay on longer than Easter.