Originally Posted by
paulieuk
Yes, to be clear, I can call any UK number for free using Three roaming whilst in Australia (grandfathered contractual rights) and my Telstra SIM gives me 300 minutes per month to any UK number (landline, mobiles, 0800s).
So I have exactly the same grandfathered Three contract and I have also used local Australian sims. I’ve never had a problem with either calling UK 0800s and used my 3 sim to call Virgin’s CS last year. Can’t speak for BA but that does seem like a BA issue more than a sim related issue.