Britain's 5G build is gated by consent, not spectrum

The UK's mobile operators came to Connected Britain this week with an ask small enough to fit on a spec sheet: let rooftop antennas sit a little higher, and let ground masts grow taller still. The number that makes it urgent is 45.2 percent, the share of the UK population with 5G availability in an Ookla report earlier this year that places the country near the bottom of the 30 it records, while Denmark, at the top of that table, reaches 83.9 percent.

Both VodafoneThree and Virgin Media O2 used the conference to point at planning rules. "Today, in order to upgrade a rooftop site, you can only have a height of six meters," said Andrea Donà, VodafoneThree's chief network officer, who wants that ceiling moved to eight to make room for the extra antennas that newer radio technology requires, and argued that ground-based masts need 25 or 30 meters against the existing 20.

Wendy Shearer, head of public affairs at Virgin Media O2, put it as a problem of planning: "the planning regime has been a significant structural barrier to the fast deployment of 5G networks, in particular, needing higher, wider masts." The UK switched on 5G in 2019, and all three of its mobile network operators have since begun rolling out 5G Standalone — now marketed as 5G+, the variant that carries faster speeds and more capacity. The complaint is not that the radios are unavailable but that the sites to mount them take too long to win.

The force of the operators' case lies in where that country sits. A market that launched 5G in 2019 sits near the foot of a thirty-nation availability table, a ranking assembled one approval at a time, and planning reform is their direct remedy: allow higher rooftop antennas and taller ground masts, and the equipment 5G SA needs can go onto sites the operators already hold.

The tension in the operators' account is mild but real: the same companies describe 5G Standalone as rolling out at pace and that pace as too slow, because the radios and spectrum are deployable while the rooftops and ground masts that carry them run into the height caps and planning rules the operators spent the week describing.

Any planning relief meets a revenue line the operators themselves keep flagging, and that line is the ARPU that comes with being treated as a utility. VodafoneThree's ARPU sits below £20 ($27.06) a month, less than half what it would have been in the 3G era by the company's own account, in a market Shearer described as "very stable and low" consumer pricing where operators are "running to stand still." George Robinson, VodafoneThree's head of government affairs, pointed to significantly higher US ARPU as the reason returns on 5G investment are easier to clear there.

Put the two arguments side by side and the planning complaint reads as a cost case: every meter of permitted height lets an operator add capacity on a rooftop it already controls rather than acquire ground, win fresh consent, and pull new power to the site, and when revenue per subscriber is set by a competitive market, cost per site is the lever left to pull. What planning relief cannot do is raise the revenue that must service the build, and below £20 a month the return on a national 5G SA program is where the arithmetic tightens — no mast height changes that.

The scarce asset in digital infrastructure is connection consent, and compute and generation are its derivatives; UK mobile is that proposition with different nouns. The gating commodity is permission — to build taller, wider, and closer to the customer — and the operators are right that it governs the pace, but it is also the one variable that, freed entirely, still leaves the investment case open, because consent does not manufacture the subscriber who pays for it.

The sector has a habit of announcing the build before it announces the price: VodafoneThree's 100 new 5G sites rest on an eight-year Nokia RAN deal as the only bankable structure in the rollout, with a 99.96 percent coverage target that carries a date but no budget. Planning reform would be a genuine input into that build, but it would not supply the missing number.

Ofcom appears to be trying to strike a balance around affordability, without resolving where the line falls. For anyone underwriting the physical layer, the narrower question is whether a 5G SA coverage pledge ever arrives with a capital figure attached, and what that figure would imply about the return the operators believe they can earn — because where that balancing lands would shape how much capex the three operators can justify against a coverage obligation.

Planning reform would strip a real cost out of the build, and the operators are right to press for it. On the numbers they brought to Connected Britain, it is also necessary and not sufficient; the next disclosure worth watching is a 5G SA coverage pledge with a capital figure attached, the document that would show whether the real constraint is physical or financial.