How can the Royal Navy sustain a Far East presence?

Which ships could support a continuing Royal Navy presence in the Far East?

River-class patrol ships could maintain the routine presence, with periodic carrier-group visits and later Type 31 or Type 32 deployments.

The proposed approach begins with River-class offshore patrol vessels assigned to an overseas patrol squadron. They would maintain a routine presence while larger ships and carrier strike groups visited periodically. The 2021 answer expected Type 31 or Type 32 frigates eventually to assume more of the role, while allowing that another River-class batch could be a cheaper interim measure. Persistent presence does not require a carrier group to remain on station continuously.