A facility manager has literally hundreds of considerations to ensure a smooth transition to a new property for the company who employs them. However, many forget one of the most important aspects of a company’s identity… their phone number.

No matter the size of a business, the reprinting costs for stationery with a new number could tilt a company so far into the red that it would be difficult to recover. Not to mention the time and effort having to notify contacts of a number change.

It is not just business cards and catalogues, telephone numbers can also be found on:

  • Company websites
  • Directories – both online and off
  • Awnings
  • Signage
  • T-shirts
  • And so much more


Telephone numbers are one of the most valuable assets a business has. Phone numbers are passed through word of mouth and shared through contacts. Change the telephone number and you might be breaking an important link in that chain.

Number porting (the process of keeping a telephone number when moving premises) can save the day, even if your provider has told you that it cannot be done.

You should start the porting process at least 6 weeks before the actual moving date as some phone numbers are more complex whilst simple ones may take only a week or so. At this stage it is difficult to know what type of number you may have. Click here to see an example of potential lead times for each type of number


As a part of your project plan, in the following order, you should:

    1. Investigate what will happen to your telephone numbers when moving.

If your current company has said it is impossible to move your number then this MAY not be true. If BT has told you that it cannot be moved then this is certainly untrue. BT may offer their Cloud telephony services as a solution, however this can be very expensive or they may offer a service called an exchange number but this is billed at £40 per month compared to similar services starting at £4 per month

    1. Check your existing contract length which might prevent you from switching providers. You can of course offer to pay out a contract which in some cases might be worth it
    2. Consider other related services that may sit on your telephone line such as broadband and red care (alarm systems) as these services will need to be ceased before the number is moved
    3. Check whether your existing phone system is fit for purpose now and into the future. Ability to upgrade etc, does it do all you want for the right price?
    4. Check that your new premises can support the telephone infrastructure that you wish to have. For example does it support fibre broadband or leased line broadband. What telecommunications cabling exists in the new premises?
    5. Consider which handsets you will want to use and how you will network them
    6. Decide whether you wish to port your number and if you do, contact a company which has experience. You are likely to be required to fill out a porting form detailing elements of your existing phone system and are likely to be asked to provide a copy of your latest bill which would serve as proof that you have license to use that number.
  • We advise you to fill out a porting form early. Receiving a date and then postponing it, is much more preferable than leaving it too late and not having a phone number in place
  • You should take great care in filling out your porting form and should get information directly from your current supplier. Many questions may see quite straightforward but may have unexpected answers. Filling out the form incorrectly can lead to serious delays and additional costs, therefore, we suggest that you seek professional advice from the company providing your new service. (check out our porting form and its guide as an example)
  • Whilst you are waiting for you number to port, you might consider that you need to have the infrastructure working on your new premises on the day your company gets moved from one place to another. Some installation companies have long lead times.

If you have a BT phone system in your current office and are considering moving outside your current exchange area, at the moment BT is not able to move telephone numbers from one exchange to another. This can be a problem even if you are moving to another part of the same town.

for example

You might be moving from Hammersmith London and may wish to move a few miles across town to Holborn but want to keep existing number. BT would not allow this and in danger of having to subscribe new telephone numbers.

BT may offer an expensive alternative to move the numbers into cloud telephony which costs 4 times more than other service and has fewer available features.

Since you are considering moving anyway, it can be a great time to consider a more flexible service.

Also potentially save further by not only keeping your existing phone numbers but consider a newer type of telephony which is more versatile and can save you thousands and might be more compatible with the needs of a modern company allowing flexibility in the number of operators and how they handle calls.

VoIP phone services allow you to increase or decrease telephone lines at the flick of a button and allows for remote working so all staff does not have to be at the same location.

It also allows for free calls between extensions and different sites offering further savings for many companies. Contact us for free advice on moving premises and find out how you can save money and increase efficiency in your workplace .