Hi ​@Deejp 

This would depend on the number specifically, however would recommend the below;

https://www.idmobile.co.uk/help-and-advice/call-charges

Tom

Freephone numbers in the UK begin with 0800 or 0808. When dialling them from abroad, use the following formats 0044800, 0044808, +44800 and +44808. 

Hi Tom. Thanks. I am not sure why you suggest it depends in the number specifically. As above the number is the international freephone number, which is 00800. The next 4 digits are 4003.  Google suggests it is not geographic specific so in themat respect. Therefore why would this make a difference?  Also as far as I can see that page you provide a link to does not provide any information about 00800 international freephone numbers. Have you actually tried searching the 00800 number via the search facility within that page yourself? It does not result in a match. Before posting the request I've already searched through the list of international call charges country list and whilst there are over about 150 countries there is nothing in the list about the international freephone 00800 listed either.  Google search shows that some providers charge when calling the 00800 international freephone number. Hence I am trying to establish if that includes ID Mobile. I would be grateful if you could provide the actual answer rather than a link to a page which doesn't actually contain the answer.