I hired MeasureMinds in December 2014 to audit Marie Curie's Google Analytics & Google Tag Manager implementations. They did everything in the brief and more in an incredibly quick time with very short notice. They also provided pro bono support after project closure. I wouldn't hesitate to recommend MeasureMinds for GTM & GA implementations.
Neil Dickson - London SEO Consultant, Growth Hacker, Digital Marketer, Marie Curie