Honeywell Evohome smart TRVs will replace most non-smart TRVs without problem.  We will also provide new valves for those radiators that you identified in your configuration as only having wheelhead (manual) valves.

Before installation we ask you to provide photos of your radiator valves so that we have all the equipment necessary to fit the smart TRV (thermostatic radiator valves) to your radiators.

Normally you have one or two different types of valves, so a couple of photos is all that is required.