Re-installed my browser, don't seem to be getting these banners anymore. Apologies! Seems as if some of my devices actually do have malware Sorry for wasting everyone's time.
Odd! Upon an earlier visit today, the website had been riddled with ad banners. Clicking on one of the payment methods, redirected me to 3rd party adverts. This has now seemingly disappeared. Could point to a potential Pharming attack?