By Jess Jones Social media companies’ political advertising policies are likely to come under increasing scrutiny as UK political parties throw more money at online ads in the run up to the election, Jess Jones writes On the day Rishi Sunak announced the election, much like the rain he stood in, political parties began pouring their resources into social media, with online advertising expenditures rapidly escalating. Since the election was called, UK political parties have collectively spent over £1m on online advertisements, more than four times the spending seen in the same period during the…