I believe anonymous prepaid SIMs will keep existing in the UK for a long time. I used to have a Tesco Pay-as-you-go SIM card, bought and topped-up anonymously w

I believe anonymous prepaid SIMs will keep existing in the UK for a long time. I used to have a Tesco Pay-as-you-go SIM card, bought and topped-up anonymously with cash, £12.50 a month for a semi-usable package with 1 GB data. Looks like they still have them: http://shop.tescomobile.com/pay-monthly/sim-only/Tesco+Mobile/simonly/tariff http://shop.tescomobile.com/pay-monthly/sim-only/Tesco+Mobil... With roaming in the EU becoming free mid-2017, and Brexit not coming into effect til 2019, the whole EU will still be well covered by anonymous prepaid.