The telephone is a key communication channel, with call centres across the UK undertaking telesales, collections, credit control, marketing and customer service activities.

UKChanges was one of the first BT OSIS licensed resellers and has been using BT data since 1991. As a result, we have unrivalled experience of this valuable dataset and have designed a range of processes to get the best from the BT information.

When you need telephone numbers from the OSIS file, UKChanges will ensure that you receive value for money and maintain your competitive edge.