Andrew Kimberlee
Hi there It's fine to have wood in kitchen prob is if there is a leak it can cause swelling and if you're sub floor is timber access can become a problem me personally when it comes to the bathroom and kitchen I always recommend vinyl as its fully waterproof and protects you're timbers and if they get damaged can cause £1000's of pound worth of damage if you're sub floor is concrete not an issue for record. All flooring is cosmetics underneath it is what holds the place together. Regards Andy