Timeline
Route: 10 years+ILR BC
Application date: 28 April 2023
Biometric: Croydon 18 May 2023
Email to Further Nationalities: 12 September
Approved email: 09 October 2023
Ceremony: 13 October 2023

Eligibility: Application as partner of BC 1 month after ILR.
Nationality: Bangladesh
Application date: 03/05/2023
Biometric appointment: 18/05/2023 (Free in Croydon)
Still waiting for approval email, it's been more than 4 months.