I was a member of zen-do kickboxing for around 4 month. First thing I have to say is that the people (teacher/senseis) were nice, friendly and always tried to help me, however I decided to leave the club ...
Why? I think it is not a really "dojo" or "martial arts" club, at least it is not what I expected for a Kickboxing club. The price for clases are very very expensive (more than £130 for just 3 days a week). You have to buy a "kit" that is totally over rate (£350 for a trousers, tshirt, globes, shinpads...something than not cost more that £80 in any store). The clases are basically a lot of workout and the same technique over and over. I am not a martial art expert, but I think the level in general is not to high. I think after the first month I started realising that the place was not for me.
Althought I had a good time when I started in this club (I really want to learn some kickboxing), I would not recomment it. very expensive for the kind of classes. If you want to get fit maybe is interesting, if you want to learn martial arts definetly find another place.
