BT Group PLC (BT.A)

The BT share price has spent years reflecting a single question: whether an enormous capital programme eventually turns into cash. This page covers what that programme is, why free cash flow rather than profit is the number that matters, and what to check.

The business

BT is really two businesses. Openreach owns and builds the physical network almost every UK broadband provider rents access to — including BT's own competitors — and is regulated accordingly. The rest is consumer and business telecoms, which is competitive and low growth. The fibre build is the story: years of heavy spending to replace copper with full fibre, in exchange for a network with lower maintenance costs and higher wholesale value at the end of it.

The moat

Openreach is close to a regulated natural monopoly, which is a genuine moat — duplicating a national access network is prohibitively expensive, which is why altnet competitors have struggled to do it at scale. The catch is that the regulator sets what Openreach can charge, so the moat protects volume rather than pricing. The consumer division has essentially no moat: mobile and broadband are price-competitive and customers switch on cost.

What to check before you value it

• Capital spending against operating cash flow — The whole valuation turns on when the fibre build peaks and spending falls. Free cash flow, not profit, is what a valuation discounts.
• Premises passed and connected — Two different numbers. Passing a home costs money; connecting it earns money. The gap between them is where returns actually come from.
• Debt and the pension scheme — One of the largest private pension schemes in the UK sits alongside substantial debt. Both are claims that rank ahead of shareholders and both need checking together.
• Regulatory settlements — Ofcom decisions on what Openreach can charge directly set the return on that entire capital programme.

How much of it you already own

BT is a FTSE 100 constituent held by UK index trackers, though at a far smaller weight than the banks, miners and energy majors that dominate the index. See what is inside an ETF and undervalued FTSE 100 stocks.

Recent filings

That free cash flow guidance is the entire investment case stated in one line: roughly £2bn now, roughly £3bn by decade-end as the build completes and capital spending falls away. Anyone valuing BT is really taking a view on whether that path is delivered, which makes the capital spending line in each set of results more informative than the revenue line.

How Oak Growth scores it

Oak Growth runs BT through the same four pillars as every other company it covers — moat, management, economics and value — and publishes a discounted cash flow intrinsic value alongside the margin of safety against the current price. Because those figures move with the market and with each set of results, they live in the app rather than on this page. See the 4-pillar method →

Common questions

Is BT Group PLC undervalued?

That depends on the price on the day you ask. Oak Growth publishes a discounted cash flow intrinsic value for BT Group PLC and the resulting margin of safety, updated from live market data rather than a fixed figure. The checks that decide it are set out on this page.

Does BT Group PLC have an economic moat?

In part. Openreach's national access network is close to a natural monopoly and prohibitively expensive to duplicate, which is a genuine barrier — but the regulator sets pricing, so it protects volume rather than margin. The consumer division has little moat and competes on price.

Is BT.A in index funds and ETFs?

Yes, though at a modest weight. BT is a FTSE 100 constituent held by UK index trackers, but its index weight is far smaller than the banks, miners and energy companies at the top of the index.

How do you value BT Group PLC?

Discount free cash flow rather than earnings, because the fibre build consumes most of operating cash flow and profit says little about what shareholders receive. The decisive inputs are when capital spending peaks and what the regulator allows Openreach to charge afterwards.

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