The OP was asking about static IP Addresses in regard to FTTP not FTTC which you seem to be referring to with your reference of a 22MB/3MB service.
When I originally signed up for FTTC it was called Infinity but AFAIK that name was dropped in 2018 and it was rebranded as Superfast.
FTTP or Ultrafast as it is now known offers three options100/500/900MB and I’ve been waiting patiently for BT to install my 900MB service which will cost less than my 80MB/20MB service!
-=Glyn=-