If you were talking about a motor rated at say 3hp or 2Kw and above, then a proper motor starter might be sensible. The starter is there to protect the motor from damage as opposed to the circuit breakers in your fuse board which are there essentially to protect the fixed electrical wiring and to cut the power in case of a short circuit. If the motor is cheap enough that you can afford to replace it, then you may feel that spending a fair chunk of its cost for the overload features of a proper starter isn't worth it to you. Personally I wouldn't on any motor small enough to run off a 13A, or perhaps a 16A plug.
It's a different story when you're talking about motors that cost hundreds, even thousands of pounds which to us as woodworkers would be large, but small enough to be disposable by the standards of industry.
Please note that the NVR function is really about protecting people, not the motor, which is why these are important even on machines with small motors if there's any danger that someone could be hurt if the machine restarted when not expected. Saws, drills, planers, sanders, etc yes. Grinders too, though a lot of them used to be made without NVR switches. Extractors I'm less convinced as you shouldn't have your body parts anywhere dangerous without unplugging it first.
If I was in business, I'd play safe and if a machine was built with a NVR or DOL starter, I'd make sure to replace like with like to maintain the level of safety the manufacturer designed.
If I was upgrading something, I'd seek advice just as you've done. I'd go to a professional for advice if this was for my business and you might ever have to justify something to HSE.
