I live in uk and i want to learn kenjutsu, need some tips and help!?

I would still consider Kendo if you really want to lose weight. However there is also Iaido, this is a martial art which people takei n combination with Kendo when wanting to be an expert of the sword. It focuses on the cutting and form of the sword where as kendo is more of the combat when facing another person (this is why its very good for fitness). On the up side i can imagine that Iaido is cheaper because you don't have to buy the armor like you do with kendo. The laws aren't that bad, i carry a bo staff and nunchucku for cl and have had loads of police p me on my way that can tell i take lessons after all many police officers are are martial artists themselves (this is for England by the way). Just make sure you keep the sword at home and only take it outside for practise. If Iaido doesn't take your fancy maybe you should take something like Ju Jitsu or Kuk Sool Won where you learn sword techniques later on and in the mean time lower your waist line with kicking and punching techniques. Hope this helps :)