iTunes Store not showing properly on Macbook Pro with Retina

Hi

Suddenly the iTune store has started presenting its content inaccurately.

All the music pages etc show one very long column of content down the left hand side.

Some images show, some don't.

Some links work, some don't.

My Music in iTunes presents well, it's just the store.

Clicking on My Purchases also doesn't present properly and can't be navigated.

Im using the latest 2015 Macbook Pro and have both the latest OS and version of iTunes installed.

Worked fine up until today