Rachel Agg must be one of the UK’s busiest musicians today. Not content with fronting Trash Kit and last year’s Scottish Album of the Year winners Sacred Paws, she also heads up London trio Shopping, who have somehow managed to find the time to record a third album in amidst it all. While those first two bands possess similar melodic indie-pop leanings, Shopping are leaner, tauter and more heavily indebted to their post-punk forebears. Their first two albums, 2013’s Consumer Complaints and 2015’s Why Choose, sound so much like products of the late 70s/early 80s that it would be tempting…