Commuters traveling into London’s Blackfriars station from East Dulwich frequently experience poor mobile signal coverage, affecting their ability to make calls, send texts, or use data services during their journey. A recent test conducted by mobile analysts Streetwave found that users on BT’s EE network have reliable coverage for approximately 80 percent of the 33-minute trip, while those on O2 only experience good signal for 27 percent of the route. This issue highlights a broader challenge facing the United Kingdom’s mobile networks, which have struggled to match the rapid improvements in download speeds and coverage seen in other countries after the widespread rollout of 5G technology.

Market data from Ookla and network analysts Opensignal show that the UK lags behind several European nations, including Italy and Romania, and has fallen behind the United States, Portugal, and Poland in terms of mobile network quality and download speeds. According to Opensignal’s most recent analysis, the UK ranks last across Europe and 57th worldwide for mobile network quality. Within London, 4G signals on underground platforms are significantly stronger—about 1.6 times—compared to those on the streets above, reflecting capacity constraints and infrastructure limitations above ground.

Ofcom’s director of technology and mobile, Andy Sutton, acknowledged that while geographical coverage has improved, the overall quality of the mobile experience remains inconsistent. This disparity has led to increased calls for political action to improve mobile connectivity. Ben Cope, co-founder of the campaign group Buffering Britain, expressed surprise that a basic service such as mobile phone coverage remains so problematic in the UK.

Industry experts and operators point to several factors behind the UK’s underperformance, including restrictive planning regulations, capacity challenges, and relatively low consumer prices, which have dampened investment incentives. VodafoneThree’s chief network officer, Andrea Dona, emphasized the need for planning reforms, noting that these represent one of the most cost-effective ways to boost network expansion under the current government.

Mobile UK, representing the primary network operators, estimates that nearly 95 percent of network improvements involve upgrading existing sites rather than building new ones. However, under current planning rules, about one-third of these upgrades—more than 16,100 sites—require full planning permissions. An Ofcom review revealed stark regional disparities in planning application outcomes; for example, Richmond upon Thames rejected 67 percent of proposals in the past five years, whereas Southampton rejected none. Protected area designations contribute to higher rejection rates in some jurisdictions, the regulator noted.

To tackle these obstacles, operators have called for expanded permitted development rights. Proposals include raising the allowable height for mobile towers to 25 meters in protected areas and 30 meters elsewhere, up from the current 20-meter cap. Additionally, operators seek to increase rooftop mast heights from six to eight meters to enhance coverage ranges. BT’s chief technology officer, Greg McCall, highlighted the extensive regulatory burdens faced by UK operators, contrasting them unfavorably with conditions abroad.

Financial pressures also weigh on investment decisions. Compliance with regulatory mandates, such as the 2020 government directive requiring the removal of “high risk” equipment suppliers like Huawei by 2027, has already cost the industry over £2 billion, according to Mobile UK. Furthermore, the UK’s mobile pricing environment has seen real price declines despite surging data consumption. Between 2020 and 2025, average prices for typical mobile service usage dropped by 20 percent in real terms even as average data demand more than doubled, according to Ofcom.

These economic dynamics have constrained operators’ capacity to invest in network upgrades. Industry analysts such as Matt Howett of Assembly Research argue that while consumers benefit from lower prices, there is a growing demand for reliable, resilient networks with broader coverage. McCall echoed this sentiment, asserting that customers increasingly prioritize network quality and stability alongside cost.

In response, the UK government initiated a review of the mobile market in February 2026, including a call for evidence concluding in May. The review acknowledged the challenging investment environment faced by operators and signaled an openness to reforms aimed at stimulating further network improvements and addressing the UK’s mobile connectivity gap.