Dixons Carphone launches Team Knowhow to provide local, one-stop, expert tech service   London, 2017-Jul-28 — /EPR Retail News/ — Rolling out across the UK from today (27 Jul 2017), Team Knowhow will provide a local, one-stop, expert tech service. Dixons Carphone, Europe's leading electrical, telecoms and services retailer, today announces the launch of Team Knowhow, a national network…