Perhaps they misheard you as though it was 07000

On T-mobile contracts it will be the rate for non-inclusive minutes, except on Flext which should include it though using up credit more than to UK mobiles

inclusive on O2 contracts and fairly likely inclusive on Orange, as other IoM prefixes are

3 charge the rate for non-inclusive mobile calls, depending on contract, and Vodafone is 50 pence a minute

From pay as you go, some will charge the same as to UK mobiles, some a lot more, like Vodafone again, but I think none will be that £1.50. It's 8p/min from giffgaff, a fairly new virtual brand on O2; as they also do call forwarding it could be useful as a work-around

What indicates this is an Isle of Man number? 07624 and 07924 are, but the prefix being asked about is 0770002, a Wire9 number in a Three range.

Localphone thinks it is in the Channel islands and charges 19c/min on their US site (plus VAT where applicable).

I think the link to IOM is that Wire9 is part of Cloud9 who operate there. Remember that the information on the Magenta Systems Codelook database is not all the info that the networks themselves have. While Codelook state it is tariff fm6 for billing purposes, other online databases state other info. One database that I looked up use the wording "personal numbering range" which a lot of networks may confuse for the much more expensive 0700 numbers that Andy has mentioned.

From: UK Telephone Number Search 0770002

Perhaps Localphone don't have detailed enough information - 077003 is Sure in Jersey

We use justvoip on our systems @ 7 euro cents per min to any UK mobile number

It's true that all (? or at least most) of the Betamax (or Dellmont or Finarea) brands do not differentiate between the different +447 numbers. (Although I assume there are distinctions made for 0700 personal numbering ranges).

Just like justvoip.com do 7c/min, it's also worth trying some of their other brands for UK mobile, which may even be cheaper.

Thank you so much guys problem solved they will have to sign up to one of the betamax things you guys rock! Really useful forum :) Thank you again to everyone i will be back with more questions its not all doom.