Just tried it - Dialling the 0207 number, I get a message asking me to enter a PIN. I tried the full number anyway, prefixed as normal by 001 but I got a message saying "sorry, unable".
I found this one:
http://www.callusafree.co.uk/
No idea if it's any good or whether it signs your number up for countless other things though. I'd give it a go personally.
Oh, this was years ago. I used my work phone in the end and hoped they wouldn’t notice an international call. They didn’t.Thread revival - @Feek what did you end up using?
Cant you get your friend to go somewhere with Wifi (cafe or something) then use Whatsapp? Even my grandma (late 80s) uses Whatsapp now instead of her landline.
Oh, this was years ago. I used my work phone in the end and hoped they wouldn’t notice an international call. They didn’t.