Denono, any protein powder, meal rep, creatine, mass builder on the market in the UK is natural, an "unnatural" product would be illegal and render any supplement manufacturer liable to prosecution and jail, so why would anyone risk producing an "unnatural" product?
Mass FX is by Smart Tec, which is owned by the Powerhouse Fitness chain, the product is run of the mill, nothing special ingredient wise and nothing special price wise either.
Have a look at this,
http://www.extremenutrition.co.uk/ca...ker-p-203.html and compare for yourself.