Her appointment has been made alongside the promotion of directors and members of the "buying and client-focused teams", and the creation of new operations and marketing roles.
Miles joined DWE in 2011 as commercial development director. She was previously managing director of Diageo Reserve Brands in the UK.
Within Justerini & Brooks, Chadwick Delaney has been appointed managing director from his previous role as deputy managing director. Giles Burke-Gaffney, previously buyer, is appointed buying director. Julian Campbell and Kate Janacek are to move from the customer sales team into the "up-weighted buying team". Two marketing roles have been created but are yet to be filled.
Nick Hyde, previously managing director of DWE, has moved to the role of chairman of DWE. Hyde is also the current chairman of the Wine and Spirits Trade Association. Hew Blair remains chairman of Justerini & Brooks and will continue his role as president of the Royal Warrant Holders Association.
Miles said: “We want to nurture our relationships with serious collectors and investors around the globe who love us for our portfolio of the best and most interesting wines, and know that there’s more to fine wines than Bordeaux. We have unprecedented access to the greats of Burgundy, Riesling and Barolo and have pioneered their current world standing. We know that there are new collectors who will share our passion for these wonderful wines too.
“We will also develop our on-trade business to focus on the very top restaurants and hotels in major UK cities.”