One of my favourite outdoor (undercover) eateries in London was Yalla Yalla (http://eatlikeushi.posthaven.com/yalla-yalla-london-02-2013-03-2013-05-2013-10-2013). I am yet to find an equivalently good place for meat on spits, falafels, salads, prices and atmosphere.
I'd read about the charcoal roasted meats at Habibiz in Westside Acton Park. The shipping container food setup has some live buskers which add to the atmosphere under the weekend sunshine. There's several places to get food but the aroma at Habibiz had the most appeal and my search to replace Yalla Yalla began.
After a short 15min wait the falafels, half chicken and salad arrived. The chicken was tender and delicious, the falafels crisp and the dips acceptable. I would have preferred thicker breads and a salad more reminiscent of tabbouleh. Nonetheless I'll be back to enjoy the Westside, eat the grilled meats and try the Indian place that looked interesting also.