UPDATE — this extends our earlier coverage: Burnham's Coronation Puts Westminster's Turmoil on Display for Washington, Moscow and Brussels

Imagine being handed the keys to a house you never had to bid on. You did not win an auction, no rival raised a paddle, and yet the deed is now yours. That, roughly speaking, is the position Andy Burnham finds himself in this week: the Express reports he is set to take No 10 within days, unopposed. When we last wrote, the story was the coronation itself — a leader arriving without a contest, and what that display of Labour turmoil signalled to Washington, Moscow and Brussels. What is new is that the argument has already moved past who governs to the far harder question of how.

The simple picture: three pressures land before he does

An uncontested succession is fast, but speed hides a cost. Because no one ran against him, Burnham never had to defend a programme in public, which means the fights he avoided during the handover are now arriving all at once. Three have surfaced already, and each points in a different direction.

The first is a warning from the man who last won Labour a landslide. Tony Blair has told Burnham not to expect to be popular, according to Sky News. Coming from a former prime minister who governed for a decade, that is less a jibe than a piece of professional advice: an unelected leader without his own election victory has no reservoir of public goodwill to draw down. He starts, in effect, overdrawn.

The second pressure is about money, and specifically about who keeps theirs. The Express reports that some of Britain's wealthiest residents are preparing exit routes should Ed Miliband be made Chancellor, amid fears of a large increase in Capital Gains Tax — the tax charged on the profit when an asset such as shares or property is sold. Whether or not many actually leave, the signal is what matters: capital reads a personnel decision as a policy decision, and prices the risk accordingly.

The third pulls the other way. the North Sea oil industry is urging Burnham to approve new drilling in UK waters, The Guardian reports. Here the tension is plain: a Miliband Treasury signals a government leaning left on tax, while the drilling ask is a test of how far it will lean green on energy. The two constituencies do not want the same government.

The complication: no mandate to spend

Here is the trick that makes this harder than an ordinary reshuffle. A prime minister who wins an election can point to that win and say the country asked for this. Burnham cannot. He inherits the office, not the argument for what to do with it — and Blair's warning is really a reminder that the goodwill which lets a leader push through an unpopular tax rise or an unpopular drilling licence has to be earned at a ballot box he has not faced.

That is why the Miliband-and-drilling combination is combustible. Push the tax agenda and you confirm the capital-flight fears; approve the drilling and you alienate the green flank that a Miliband appointment was meant to reassure; do neither decisively and you look like a government that cannot choose. Each path spends credibility the new prime minister has not yet banked.

Why it matters: three capitals are reading the same page

For Brussels, the UK's tax-and-energy posture is not abstract. A Chancellor who spooks capital and a drilling decision that reopens the domestic climate fight both feed into how predictable a partner Britain looks on the questions that touch the EU directly — investment flows, energy supply, the long grind of the post-Brexit relationship. An unelected leader improvising under crossfire is harder to negotiate with than one who can say what his voters sent him to do.

Hypothesis: the drilling request is being timed to catch a leader at his weakest, before he has settled his own priorities. Supporting this: the industry is pressing publicly at the exact moment of transition, and a new prime minister with no mandate is unusually exposed to organised lobbying. Against this: the source material shows the ask but not its timing strategy, and industries lobby every incoming government as a matter of routine. Treat it as an informed reading, not an established fact — the sources establish the request, not the motive.

For Washington and Moscow, the read is coarser and therefore more dangerous: does London have the bandwidth to act, or is it absorbed by its own succession? A government fighting three domestic fires in its first week projects less. That perception is itself a variable others can plan around.

What to watch next

  • Whether Miliband is actually named Chancellor — the single appointment that decides whether the capital-flight story hardens into fact.
  • How Burnham answers the North Sea drilling request, and whether he answers at all — silence is also a signal.
  • Whether he moves to shore up legitimacy, for instance by seeking an early mandate, given Blair's warning that popularity will not arrive on its own.
  • Any shift in tone from Brussels once the Cabinet and its tax intentions are known.
The one thing to remember: an uncontested rise settled who runs Britain, but it postponed every hard choice — and tax, energy and legitimacy have all come due in the same week, with three foreign capitals reading over his shoulder.