Both - Local Feed is Empty
Ok, there could simply be no one from London posting but, I think the range link / option on the 'local feed' link is a bit buggy. Increase it to over 160 km, and people from Cork (About 200 km from me) get included.
But, no matter how high it goes after that, no new material
On the Grokio app, the website, and the Feabie app, the local posts tab only shows my own posts instead of all posts from local users.