Does Labour now fear Boris more than Cameron?

The Mayor of London is increasingly viewed as a threat by Labour.

"I think the biggest threat to our chances now is …" I eagerly awaited the conclusion to this sentence uttered in a conversation earlier this week with a senior figure in the Labour Party. This is someone who, not surprisingly given the coalition’s travails, is very upbeat about Ed Miliband’s chances of becoming Prime Minister. (He referred to "when" rather than "if" it happens, which is a new development in the tone around the shadow cabinet.)

So what would that threat be? Ongoing doubts about the party’s fiscal credibility? Lack of a clear narrative on what to do with public services? A divisive row with the Unions over how reconciled the party should be with the cuts it will inherit?

"… Boris," he said. This surprised me. I’m a bit of a Boris-sceptic, thinking much of the cheerleading on his behlaf is an expression of Tory frustration with Cameron, rather than a serious movement to get the London Mayor promoted to the job of Prime Minister any time soon. But the case was persuasively made. Everything that is now being said about his unsuitability for the top job and the unlikelihood of it actually happening was once said about his chances of being London mayor. He is, I was told, a real star who has managed his career well and, crucially, who animates people who don't usually care about politics. That is the Holy Grail in Westminster these days. The fact that he isn’t in parliament now and has another job? A minor hurdle, apparently. Once Tory MPs are convinced enough that Cameron is leading them to defeat their famously regicidal tempers will be fired and a way will be found.

I’m still not entirely persuaded but it is certainly revealing that Labour people are taking the prospect very seriously indeed. (My colleague George points out that Jacqui Smith, former Labour Home Secretary, has intervened in a fairly vigorous attempt to debunk the myth of Boris bonhomie.) It wasn’t that long ago that Labour people were actually rather enjoying Johnson’s not so secret campaign to undermine Cameron and Osborne. They may have hated the way he kept Labour out of City Hall but the prevailing feeling was that his function on the national stage was as a convenient thorn in the PM’s side - an enemy’s enemy and therefore kind of a friend. No longer.

I was reminded also of a conversation I had a while ago with one of Ed Miliband’s advisers about the issue of charisma and personal ratings, where Cameron still beats the Labour leader in opinion polls. Wouldn’t a presidential-style contest between the two men be a problem for Ed? The answer: that is the received wisdom, yes. But consider how much of a hit Cameron’s personal brand has already taken, how limited his power is in coalition, how much some his own MPs dislike him, how jaded his act will seem by 2015. Is it so hard to think that, by the next election, a presidential face-off would be something Miliband might even relish? I was deeply sceptical of that proposition at the time and most people I have shared it with (including pollsters) have looked puzzled or snorted in disbelief.

But to hear Tories talk about their own leader is a masterclass in disillusionment and pessimism. Sometimes they seem to do a better job of talking up Miliband’s chances than their Labour counterparts. Partly that is because Labour MPs are desperate not to sound complacent and because they have more of an insight into how brittle and unready the party machine is when it comes to the prospect of fighting an election. The Tories know their own weaknesses on that front too, of course.

The Labour high command certainly isn’t writing Cameron off. Far from it. The feeling I get from talking to Miliband’s closest aides is that they know Cameron still outpolls his party and remains a formidable politician  - "clearly he is still their strongest asset" – says one. The Tories, goes this view, would be crazy to change leader before the election. That remains a very remote possibility in any case. But something has definitely changed in the way Labour views their main opponent.  There is now someone in the wings they would want to take on even less.

The Mayor of London is increasingly viewed as a threat by Labour. Photograph: Getty Images.

Rafael Behr is political columnist at the Guardian and former political editor of the New Statesman

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Inside Big Ben: why the world’s most famous clock will soon lose its bong

Every now and then, even the most famous of clocks need a bit of care.

London is soon going to lose one of its most familiar sounds when the world-famous Big Ben falls silent for repairs. The “bonging” chimes that have marked the passing of time for Londoners since 1859 will fall silent for months beginning in 2017 as part of a three-year £29m conservation project.

Of course, “Big Ben” is the nickname of the Great Bell and the bell itself is not in bad shape – even though it does have a huge crack in it.

The bell weighs nearly 14 tonnes and it cracked in 1859 when it was first bonged with a hammer that was way too heavy.

The crack was never repaired. Instead the bell was rotated one eighth of a turn and a lighter (200kg) hammer was installed. The cracked bell has a characteristic sound which we have all grown to love.

Big Ben strikes. UK Parliament.

Instead, it is the Elizabeth Tower (1859) and the clock mechanism (1854), designed by Denison and Airy, that need attention.

Any building or machine needs regular maintenance – we paint our doors and windows when they need it and we repair or replace our cars quite routinely. It is convenient to choose a day when we’re out of the house to paint the doors, or when we don’t need the car to repair the brakes. But a clock just doesn’t stop – especially not a clock as iconic as the Great Clock at the Palace of Westminster.

Repairs to the tower are long overdue. There is corrosion damage to the cast iron roof and to the belfry structure which keeps the bells in place. There is water damage to the masonry and condensation problems will be addressed, too. There are plumbing and electrical works to be done for a lift to be installed in one of the ventilation shafts, toilet facilities and the fitting of low-energy lighting.

Marvel of engineering

The clock mechanism itself is remarkable. In its 162-year history it has only had one major breakdown. In 1976 the speed regulator for the chimes broke and the mechanism sped up to destruction. The resulting damage took months to repair.

The weights that drive the clock are, like the bells and hammers, unimaginably huge. The “drive train” that keeps the pendulum swinging and that turns the hands is driven by a weight of about 100kg. Two other weights that ring the bells are each over a tonne. If any of these weights falls out of control (as in the 1976 incident), they could do a lot of damage.

The pendulum suspension spring is especially critical because it holds up the huge pendulum bob which weighs 321kg. The swinging pendulum releases the “escapement” every two seconds which then turns the hands on the clock’s four faces. If you look very closely, you will see that the minute hand doesn’t move smoothly but it sits still most of the time, only moving on each tick by 1.5cm.

The pendulum swings back and forth 21,600 times a day. That’s nearly 8m times a year, bending the pendulum spring. Like any metal, it has the potential to suffer from fatigue. The pendulum needs to be lifted out of the clock so that the spring can be closely inspected.

The clock derives its remarkable accuracy in part from the temperature compensation which is built into the construction of the pendulum. This was yet another of John Harrison’s genius ideas (you probably know him from longitude fame). He came up with the solution of using metals of differing temperature expansion coefficient so that the pendulum doesn’t change in length as the temperature changes with the seasons.

In the Westminster clock, the pendulum shaft is made of concentric tubes of steel and zinc. A similar construction is described for the clock in Trinity College Cambridge and near perfect temperature compensation can be achieved. But zinc is a ductile metal and the tube deforms with time under the heavy load of the 321kg pendulum bob. This “creeping” will cause the temperature compensation to jam up and become less effective.

So stopping the clock will also be a good opportunity to dismantle the pendulum completely and to check that the zinc tube is sliding freely. This in itself is a few days' work.

What makes it tick

But the truly clever bit of this clock is the escapement. All clocks have one - it’s what makes the clock tick, quite literally. Denison developed his new gravity escapement especially for the Westminster clock. It decouples the driving force of the falling weight from the periodic force that maintains the motion of the pendulum. To this day, the best tower clocks in England use the gravity escapement leading to remarkable accuracy – better even than that of your quartz crystal wrist watch.

In Denison’s gravity escapement, the “tick” is the impact of the “legs” of the escapement colliding with hardened steel seats. Each collision causes microscopic damage which, accumulated over millions of collisions per year, causes wear and tear affecting the accuracy of the clock. It is impossible to inspect the escapement without stopping the clock. Part of the maintenance proposed during this stoppage is a thorough overhaul of the escapement and the other workings of the clock.

The Westminster clock is a remarkable icon for London and for England. For more than 150 years it has reminded us of each hour, tirelessly. That’s what I love about clocks – they seem to carry on without a fuss. But every now and then even the most famous of clocks need a bit of care. After this period of pampering, “Big Ben” ought to be set for another 100 or so years of trouble-free running.

The Conversation

Hugh Hunt is a Reader in Engineering Dynamics and Vibration at the University of Cambridge.

This article was originally published on The Conversation. Read the original article.