High business rates are forcing many startups to abandon London, and leaving entrepreneurs to invest in the Caffe Nero loyalty card scheme instead. Life for small businesses in London has never been more challenging. For example, the West End has seen rent, business rates and service charge costs increase by up to 16% to £217.75 per square feet per annum since 2014. The 2017 business rates revaluation is aiming to help smaller businesses gain relief, or even exemption, from the tax altogether.…