We're sorry to say that we won't don't have any more of the O2/EU SIMs which roam to other UK networks when no O2 coverage. This is sadly not for technical reasons.
From now on we have O2 only SIMs (work in UK on O2), EU only SIMs (work in UK, EU, and world, but higher price), and O2/EU SIMs which switch, but only do O2 when in the UK and so do not roam to other UK networks.
We hope soon to have some new SIMs that have sensible UK pricing and roam to other UK networks, but we do not have a date for this. It is being worked on.
The web site has been updated, but if you normally order Uk roaming O2/EU SIMs, please take not that they will not be the same as you had previously.
EXISTING SIMS ARE NOT AFFECTED
The new O2/EU SIMs (which are always O2 in the UK) do have a nano-SIM cut out. We'll announce once we get some UK roaming SIMs again, and this is expected soon.