Snorvey wrote:[i]Without a deal, insurers and pension providers would be legally barred from sending out payments, leaving policies dormant on their accounts.
What law would that be then? The UK is currently part of the EU. Those with UK policies retiring to non-EU countries aren't barred from receiving pension payments, neither are those in receipt of pensions from outside the EU prohibited from receiving them in the EU. The EU doesn't have a monopoly on international flows of money.