By Leah Montebello Amazon could be forced to fork out £900m in compensation after the tech giant was accused of unlawfully favouring its own offers. The collective action lawsuit alleges that Amazon breached competition law and caused tens of millions of Brits to pay higher prices for products by obscuring better-value deals. The lawsuit, which is headed by consumer rights advocate Julie Hunter, is due to be filed to the Competition Appeal Tribunal this month and includes anyone who made a purchase online or on the Amazon app since October 2016. The claim will allege that the Big Tech firm abu…