I asked the MHRA about date discrepancies between the EUAs and safety trial dates I received in FOI answers from them.
They said the safety trail dates used for the issuance of the EUA was "3 months - 01st Oct 2020 to 01st Dec 2020" then when challenged claimed they had data that "pre-dated" these dates and the DHSC requested the approval mid-Nov 2020.
All FOIs documented on my substack - here's a couple on the subject: