You can get a cheapish induction hob from Amazon to try out for about £45, which as our build is a five week-er with extra work I think we shall invest in (I think this and our rice cooker with steamer in the dining room will do for two or three nights a week). We have gone for a hob without knobs, partly because one draw was cleaning. Our gas hob is a nuisance to clean and the clean lines of a knobless induction hob appealed.
Why do people want knobs? Is it because their fingers don't work the buttons. That is my worry but I consoled myself that surely this cannot be possible.
Still trying to work out which pans we shall need to ditch. It seems the Le Creusets will be okay (phew!) and our new flat bottomed wok, but having been told stainless steel works, our non-magnetic stainless steel pans which came from Habitat in the 1980s don't look promising (some of the best lasting pans we've ever bought), nor does a very nice copper bottomed pan which I liberated from my parents when we bought our first place in London, and whose lifetime guarantee has not been tested in over forty years.