I have always been happy with Dial9 for VoIP, much better control panel interface than most providers.
We have hundreds of members who use our free service, here:
https://yourbusinesscommunity.co.uk...one-number-with-free-unlimited-diverted-calls
There is a small charge for an 0800 number!
To do this, you need to generate phone number through special software. In such a program's menu, you can choose the country whose number you'll use. I used this generator when I was in Portugal for three months. None of my customers should have guessed that I was now abroad. It was my long vacation. And generating a phone number through the program really helped me maintain my status as a reliable project performer. So my suggestion may be convenient for you. You're going to use these numbers for work, as I did. Give it a try.I think you can change your landline number all the time if you want.