The next wave of UK connectivity programs will look extremely attractive on spreadsheets, in boardrooms and inside investor models. That should give people pause – because that’s exactly how the risk presents itself.

The logic will be clear, the numbers will line up, the milestones will connect, and the value creation story will be compelling. There will be no doubt about it. The more coherent the plan appears, the easier it is to believe that the outcome is largely understood.

That is where the risk begins.

This is not more of the same

What sits in front of the industry now – particularly for the consolidators – is not simply a more complex version of what came before. These programs sit in a different league.

They behave differently, and they expose a gap between how they are planned and how they actually perform under real conditions.

They don’t fail because they are badly run. They fail because they are treated as if they belong to the same category as everything else. They don’t.

The shift from build to consolidation changes the nature of the problem. Networks are no longer being extended in isolation; they are being combined, rationalised and expected to operate as a single system.

Systems must be integrated, operating models aligned and commercial complexity reduced. Each step makes sense in isolation. Taken together, they create a system that only works if everything aligns sequentially and at exactly the right moment.

That is a much tighter constraint than most plans acknowledge.

These programs cut across multiple organisations, suppliers and platforms. Control is fragmented, and a large proportion of delivery sits outside direct authority. Progress depends on sequential alignment across teams, suppliers and systems that often operate to different incentives, priorities and timelines.

At the same time, the outcome rests on a small number of assumptions holding together under real conditions – take-up building as expected, systems supporting the commercial model, customer experience matching the promise, and costs landing where they need to.

Each assumption is individually credible. Yet, together, they are unforgiving.

Why traditional approaches lose their grip

This is where programs in this league separate from the rest. The risk does not sit neatly within workstreams; it sits between them – where systems must connect at the same moment, where timing and sequencing have to be exact, and where commercial intent meets operational reality.

Individual workstreams can appear healthy in isolation while the overall system quietly drifts out of sequence.

This is closer to orchestration than coordination, and it is where traditional approaches begin to lose their grip – well before the reporting reflects it.

A conventional PMO can track progress, manage governance and maintain structure. That remains necessary, but it does not determine whether the system will work when it is fully exercised.

Until that point, everything can still look fine. Milestones are met, reporting remains positive, and confidence holds. The plan stays coherent and the story continues to make sense.

What has not yet been proven is whether the system will hold.

By the time that test comes, most of the major decisions are already locked in.

Reversing them at that point is rarely straightforward.

When reality arrives

When the system is finally exercised, issues tend to surface quickly, often in different combinations.

Costs move, timelines stretch and value begins to erode. At that point, the gap between what was assumed and what is real becomes very difficult to close.

This is why investor expectations are tightening. The focus is shifting from build to return, and the questions are becoming sharper – what has actually been tested, which assumptions are load-bearing, and how the model behaves under pressure.

There is also a more subtle dynamic.

At this stage, it is easy to jump to the end of the story, where the model works, the synergies land and the cash flows follow.

The path to get there receives less attention, as if execution is simply a phase that will be managed.

But in programs like these, it is not a phase.

It is the only place where the outcome either comes together – or doesn’t.

A simple question

When was the last time your organisation attempted a program like this – one that truly sat in a different league? And if you have, how did it go?

Most organisations can point to an example. The plan was coherent. The confidence was genuine. The outcome felt like a racing certainty.

But the execution told a different story.

The uncomfortable truth

These programs will make complete sense on spreadsheets. That is exactly why they are dangerous. The outcome feels like it is already in the bag.

We have seen dozens of programs in this league. The characteristics are familiar, and so is how they tend to end.

Treat them like everything else, and they don’t behave like everything else.

Treat them as a scaled-up version of normal delivery, and the result is not uncertainty.

It is a racing certainty of a very different kind.

The only real question is whether that reality is discovered early enough to do something about it – or later, when the cost of change is already locked in.

About the author

David Hilliard is founder of Mentor, specialists in strategic program execution.

You can call him on 0118 359 2444 or email david.hilliard@mentoreurope.com.