Where to buy Japanese hair products in England?

I was wondering if anyone knows of UK based stores, where i can purchase Japanese hair products. I currently use Gatsby range of hair wax which i have to order over from Japan and can take a while to receive. I would like to try some other products such as Nakano but i have not been able to find any UK based retailer so i was wondering if anyone knows of any.

I realise some might say that i could simply use any of the hundreds of readily available hair products from my local supermarket but i find that those hair products don’t work well for my hair and end up damaging it. Though i haven’t made use of all that are available i would like to avoid the hassle of finding out as i already know of products that work well.