Two further Orange stores are to be refitted to the business format by the end of this year.
Advise is available on Orange’s small business price plans; Solo, Venture and Momentum. There will also be mobile email demonstrations and smartphone device displays.
Orange said it chose Oxford Street following research conducted last year which showed the City of Westminster had more VAT-registered small businesses than anywhere else in the UK.
Orange UK director of retail Sian Doyle said: “Our research shows small business customers want advice specific to their needs, from highly-trained, dedicated business staff.
“By opening this new store on Oxford Street, we have ensured business customers can now get the right type of service for their needs.”