Best to clarify with the council directly if you need to wait for the HO invitation letter.

Eligibility criteria: Settled status (5 years in UK) + 1 year ILR (11+1 in reality, but only need 5+1 to apply) Language Criteria: Life in the UK test + uni degree Nationality : EU (Poland) Method of application: Online Date of application: 09/01/2021 Date of acknowledgement: 10/01/2021 Documents up...

I assume you mean naturalisation. The professional referee needs to be of a recognised/chartered profession, e.g. doctor, solicitor, architect etc. or a priest.