NEW: No-deal roaming charges. Govt confirms my story that surcharge-free roaming "cannot be guaranteed" in the event of a no-deal Brexit. Govt also (as I reported) says it will legislate to apply limits if necessary. Notes some operators "no current plans" to change approach 
And.... While govt keen to stress companies covering 85% of consumers say have "no current plans" to reintroduce roaming charges, that is very different from current EU's legal protection, aka 'Roam Like at Home'. And 15% consumers NOT covered in that pledge (a lot of phones)
NO DEAL DRIVING: You'll need an international permit to drive in EU. AA bemoans "extra burden" & says it's disappointed these permits can only be issued at Post Offices. Cost = £5.50. Queue times? NAO said PO's might have to issue up to 7m of these permits in first year... urgh
PERSONAL DATA in NO DEAL: UK says it will allow EU firms to continue to access personal data here, but no guarantee of reciprocity. TechUK says No Deal would be "hugely damaging to the UK" says businesses and consumers will face "additional costs, complexity and bureaucracy"
And on the matter of NO-DEAL driving.... As @laurabundock & @StephenFidler1 point out, if you want to drive into France and Spain you'll need TWO international permits (I know) and if you're driving in Ireland you'll need to renew your permit every twelve months
PASSPORTS. In event of a No-deal make sure you have to make sure your passport has six months validity. If you think you'll be affected, the govt advises you to renew soon in order to avoid busy Spring period
