Online shopping

Buying Japanese Ingredients online in the UK - suggestions?

I hope this hasn't been covered elsewhere; I did scour the forum but I don't see it, so sorry if I missed it! I am a Japanese cooking enthusiast based in the North East of england, and get most of my ingredients from Japan Centre. They have always proved pretty good, but I've noticed there are a few essentials that I have been able to get on there recently - namely konbu (which I need for yummy vegan dashi - had to get rubbish ol' dashi powder instead) hijiki and whole takuan (better for veggie sushi than the pre-cut half-moons)
Taxonomy upgrade extras: