Harvey Nichols is to open its first small-size outlet - and third UK store - at the Mailbox, Birmingham's new upmarket retail location. The new 15,000 sq ft store joins an impressive collection of designer retailers, including Emporio Armani, DKNY, Thomas Pink, Iceberg and Christian Lacroix. The retail development is due to open next month.Alan Chatham, director of Birmingham Mailbox, said: "We are thrilled to have secured Harvey Nichols and it is a clear indication that the Mailbox is creating a premier league lifestyle and retail pitch on a European scale."Harvey Nichols has taken two units on either side of the development's entrance, which will be linked by a bridge. It is likely to be the first in a series of slimmed-down boutiques, which chief executive Joseph Wan said the retailer planned to launch last year. The shops will feature Harvey Nichols' own-branded clothing labels, food and cosmetics and a brasserie/restaurant.Bath, Glasgow, Newcastle and Nottingham are thought to be on the list, said UK trade magazine Retail Week.Harvey Nichols has already committed to two more department stores, opening in Edinburgh in 2002 and Manchester a year later.