“Tumble tots” any good? - or any other variations of this anyone can recommend?

My LO is 14 months not yet walking. Will cruise a bit but is very on the move and walk to try her out with a more active class. A friend in London where we used to live takes her LO to something called baby gym. Thinking to go to the ‘Tumble Tots’ class in Verwood or Colehill. Anyone know if it’s any good or any other classes similar? Thanks 🙂