UK business travellers have spent the past five years navigating a post-Brexit roaming market with no price cap and little consistency between providers.

The digital SIM, downloaded to a handset before departure, has emerged as the default fix, and eSIM firm Holafly says the shift has changed how travellers behave the moment they land.

Since the EU rules ceased to apply to UK contracts, some tariffs still include free calls and data across Europe while plenty do not. A handful of emails and a map refresh on the transfer into town can be enough to start charges before a traveller reaches the hotel. Ofcom now requires providers to alert customers when roaming begins and to publish their charges, but the onus remains on the traveller to check.

From local SIMs to a download

For years the standard advice was to buy a local SIM on arrival. Few travellers followed it. Removing your own SIM raised awkward questions about lost contacts, changed numbers and whether WhatsApp would still work, so most people did nothing and absorbed the fees.

An eSIM removes the physical card altogether. It is a digital SIM profile downloaded to the handset, bought before departure, activated on landing and deleted on return. Your UK number stays live on the primary SIM for calls and texts, provided data roaming is switched off on that line to avoid unintended carrier charges. The one genuine drawback is recovery: moving an eSIM to a replacement handset is fiddlier than swapping a plastic card, although providers including Holafly handle transfers through in-app support.

Most handsets sold since 2018 support multiple SIMs, and some iPhones can store up to eight eSIM profiles. That capacity is what makes the format practical for anyone running several markets at once, and it explains why competition has sharpened, with Virgin Connect Roam offering free introductory data and Orange Travel bundling eSIMs into Trip.com bookings.

The psychology has shifted

Ricardo Rodríguez, Head of Sales B2B at Holafly, argues the biggest change is behavioural rather than technical. “Travellers used to feel anxious about roaming. They’d turn off data the moment they landed. eSIMs have flipped that. Now people expect to be connected instantly, without worrying about the bill.”

The company has built its proposition around removing friction. “We wanted to remove every barrier,” Rodríguez says. “No stores, no physical cards, no technical steps. You buy the eSIM, scan the QR code, and you’re online. That’s it.”

For corporate travellers, the practical argument is downtime. “If you’re flying for work, you need data the moment the wheels touch down. eSIMs give you that reliability,” he adds.

Matching the plan to the trip pattern

Holafly structures its range around travel frequency rather than destination alone. “People don’t travel the same way,” Rodríguez says. “Some go abroad once a year, some every month, and some live between airports. So, we built products for every rhythm.”

Occasional travellers taking one or two trips a year get simple regional plans with unlimited data options and no contract. Frequent travellers on monthly or quarterly schedules get longer validity and multi-country coverage, aimed squarely at those who need working data on arrival. Constant flyers get unlimited global plans and multiple eSIM profiles for weekly international movement.

The category is broadening beyond air travel too, with providers now extending coverage to cruise ships and other previously awkward environments. For UK SMEs sending staff abroad, the takeaway is straightforward. An eSIM is no longer a workaround for roaming fees. It is becoming the standard way of buying data for a trip, and it is cheap enough that the old habit of switching data off on landing now costs a business more in lost time than it saves.

Practical checklist

  • Buy and download the eSIM profile before you fly.
  • Keep data roaming switched off on your primary UK SIM.
  • Scan the QR code to activate on arrival, no shop visit needed.
  • Delete the profile when you get home.
  • Check your provider’s published roaming charges before departure if you plan to rely on your UK tariff.

 How eSIMs Actually Work

  • No physical card: Your phone downloads a digital SIM profile.
  • Keep your UK number: Your main SIM stays active for calls and texts but do remember to keep data roaming turned off on your primary sim to avoid unintended carrier fees.
  • Add a travel data plan: The eSIM handles data abroad, avoiding roaming fees.
  • Activate instantly: Scan a QR code; no shop, no tray, no swapping.
  • Deactivate anytime: Remove the profile when you’re home.
  • Only limitation: Harder to transfer if your phone breaks but support available

Holafly Traveller Tiers

Occasional Traveller (1–2 trips a year)

Perfect for holidays, weekend breaks, family visits. Simple regional plans, unlimited date options, no contracts.

Frequent Traveller (monthly or quarterly trips)

More flexible packages, longer validity, multi‑country coverage. Ideal for business travellers who need reliable data on arrival.

Constant Flyer (weekly international travel)

Unlimited data options, global plans, multiple eSIM profiles. Designed for people who live between airports and time zones.