Weetabix, the largest cereal company in the UK, is to be sold to Post Holdings, the third biggest player in the US cereal market, for $1.8 billion (£1.4 billion), according to reports in the BBC and the Independent. Chinese outfit Bright Food has been the majority owner of Weetabix since 2012, when the company bought a 60% stake in the cereal maker. However, the brand has reportedly unable to make …