ToolBox -

The PlusTalk package available to Broadband Plus customer includes unlimited free calls to any UK/IOM destination where the telephone number begins with 01 or 02 , so for example;

01624…….. (Isle of Man)
0161……… (Manchester)

Charges to other number and for customer on the standard VoIP tariff can view call rates on this page

Terms and conditions do apply, but for 99% of users – these shouldn’t be an issue.