Number Porting

Porting BT and Energis numbers

It is now possible to port all BT geographic area code telephone numbers. Non-geographic BT numbers beginning with 08 (e.g 0800, 0870, 0845) can also be ported, as can 08 numbers supplied by Energis. To port a BT or Energis number to Gradwell dot com we require the following (please note that the downloadable form on this page is in MS Excel format).

NB: Any numbers with services attached/associated to them (e.g. fax, broadband, alarm systems, credit card machines) will be ceased when the number is ported over to Gradwell. If this is the case you must arrange to transfer these services to new number with BT before attempting to port.

The following circumstances will not prevent the export of a number:

  • Change number Interception (CNI)
  • Permanent call diversion

The following circumstances will prevent the export of a number:

  • Numbers associated with a temporary service
  • Inactive numbers
  • A non-BT account number (unless with another VoIP provider*)
  • A non-BT provided number, for example an NTL supplied number ported to BT (unless with another VoIP provider*)

* To port a SIP number we would require a letter of authorisation from the losing provider and also the letter of authorisation customer.

Porting VoIP numbers from other providers

We are able to port numbers from some existing VoIP providers such as Sipgate (providing you have their agreement to do so.)

This takes up to 3 days to complete once permission is granted.

If you have a number from another VoIP provider that you would like to port, please print off, complete, sign and fax this form to 01225 800801.

Porting Timescales

Below are details on processing time for different types of numbers to be ported. If there are any problems Gradwell will contact you to advise. We cannot port on weekends.

  • 1 single line request = 10 working days
  • Up to 10 single lines = 20 working days
  • PBX 10 lines or less = 14 working days
  • PBX 11 or more (or a centrex site) = 22 working days
  • Simple DDI = 22 working days
  • Complex DDI = 27 working days
  • ISDN 10 lines or less = 14 working days
  • ISDN 11 lines or more = 27 working days

How much does it cost?

  • 1 single line request = £20
  • Up to 10 single lines  = £100
  • PBX 10 lines or less = £100
  • PBX 11 or more (or a centrex site) =  £200
  • Simple DDI Block of 10  = £100
  • Complex DDI Block of 11+  = £200
  • ISDN upto 10 lines = £100
  • ISDN 11+ lines = £200

Please note that any Resubmissions/Changes are charged at £20 + VAT.

Classified as order rejected by BT due to incorrect information, Porting date change, cancellation.

BT directory enquiries

If the number(s) is/are already listed please request that it is required to be continued.

If you want your ported number to be listed on the directory enquiry service (118 150) please print off and complete this form and fax to 01225 800801 along with your other forms. Please note that there will be an additional £10 charge per number for this facility.

All prices plus VAT.

If you have any problems, please contact our sales team.