Yep, it looks like Mobile Fun got their Samsung Galaxy S III accessories in stock and they’ve posted images or those above and more on their blog..
(above left to right: Wi-Fi Display Hub, C-Pen, Flip Cover, Holder and Battery Charger)
Check them out over here for more info http://www.mobilefun.co.uk/blog/2012/05/weve-got-the-first-images-of-the-genuine-samsung-galaxy-accessories/