If Andrew Mitchell is cleared, Ed Miliband should apologise

The Labour leader should begin by backing Cameron's call for a swift investigation to establish the truth.

It was fun while it lasted.

"Plebgate" and the drawn-out resignation of Andrew Mitchell has been pure gold to Labour these past few months.

Here we had an aloof Tory politician – the government’s new chief whip no less - upbraiding dedicated public servants as "fucking plebs" for simply following security protocol and politely refusing his demand that Downing Street’s gates be opened so he could ride out on his bicycle. For their temerity in directing him to a side-gate they got a gob full of insults and threats. The depiction was damning: a government that is out-of-touch, arrogant, selfish and, most of all, posh. Specifically, Mitchell is alleged to have said to the officers on duty:

"Best you learn your f------ place...you don’t run this f------ government...You’re f------ plebs." 

So says the police’s log, leaked to the Daily Telegraph a few days after the incident last September, with Mitchell adding menacingly, "you haven’t heard the last of this". Although he admits using the ‘f’ word, Mitchell has always denied calling officers "plebs" or "morons". However his – and Downing Street’s – weak handling of the crisis made many assume the worst possible version of events had to be true.

It didn’t help that we were treated to tales of Mitchell’s quick temper which earned him the nickname "Thrasher" at school, while it was made clear time and again from enemies in his own party that he was damaged goods and unable to perform the role of parliamentary disciplinarian after showing little self-restraint himself.

That was then. Now we learn, courtesy of Channel Four’s Dispatches, that all is not as we had assumed. Leaked CCTV footage of that fateful night shows no angry confrontation with the police. There is no finger-jabbing or aggressive posture. Nor does the footage show "several members of public" who were "visibly shocked" by the episode, which the police log assures us was the case.

Perhaps most damningly, Dispatches uncovered that a constituent of deputy chief whip John Randall who wrote to the MP claiming to have witnessed the incident first-hand, including details that corroborated the leaked – and contended – version of events in the police log, turns out to be a serving police officer.

The plot thickens. As does the dilemma for the Labour leadership. Downing Street has demanded the police "get to the bottom of this as a matter of urgency", saying any allegation that a serving police officer "fabricated evidence" is "exceptionally serious". Meanwhile the BBC’s Nick Robinson reports that Boris Johnson has told Metropolitan Police Commissioner Bernard Hogan-Howe that he is “extremely concerned not just about this alleged wrongdoing but any suggestion of an alleged conspiracy” to damage Mitchell. This is significant as Boris was quite happy to pour petrol on the situation himself. He said at the time that it would have been "wholly commonsensical" for officers to have arrested Mitchell for his conduct.

Which brings us to Ed Miliband. Mitchell has been good sport. Back in October the Labour Leader goaded David Cameron over the "double standard" that while someone "abusing police officers" in the street would be arrested, Mitchell was being protected. "While it’s a night in the cell for the yobs, it’s a night at the Carlton Club for the Chief Whip," he quipped.

If it now turns out that Mitchell is a wronged man, and is only guilty of the minor indiscretion of saying "I thought you lot were supposed to fucking help us" (his admitted remark) then he is entitled to feel aggrieved at what has happened to him. A quick return to the cabinet might not be on the cards, but speedy and earnest apologies should be. And Miliband should be first in line.

Today he has the opportunity at the final Prime Minister’s Questions before the Christmas break to position himself against the real possibility that this issue will now move in Mitchell’s favour. He should strongly back the Prime Minister’s call for a speedy investigation to establish the full facts once and for all and concede that there now appears more to the story than everyone first thought. Indeed, Miliband urged such an inquiry when the issue came to light in September.

On the basis of never letting a good crisis go to waste, he should show us that "the new politics" he espouses means political leaders can show generosity to their opponents – and even contrition – in due course – if Mitchell is now cleared.

Former government chief whip Andrew Mitchell, who resigned in October. Photograph: Getty Images.

Kevin Meagher is associate editor of Labour Uncut and a former special adviser at the Northern Ireland office. 

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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.