Portsmouth manufacturing history

 Portsmouth was one of the earliest homes of naval shipbuilding; there is some evidence that Richard the Lionheart's ships taking him on the crusades were built there. Henry VII commissioned the first dry dock in 1495. The Mary Rose was built there as Henry VIII amassed galleons to keep up with the Spanish and Portuguese.

It wasn't only naval shipping, Portsmouth's ships travelled the globe with particular emphasis on trading in spices so much so that a part of the dock area became known as spice island.

Towns which were home to naval dockyards boomed in times of war, but when peace came so did unemployment and poverty. Yet war was never far away, especially with the French who posed a constant threat. In the years following the restoration of the monarchy, in 1665 Sir Bernard de Gomme, Engineer in Chief of all the King's castles reviewed coastal defences and began a fifty year programme in Portsmouth for the defence of the crucially important dockyard. In spite of all this civil engineering, shipbuilding continued notably with the 100 gun Britannia.

Naval harbours were also changing as a result of penal policy. The number of offences punishable by transportation increased with convict numbers beyond the capacity of penal colonies and so prison hulks became a feature in many harbours over filled with inmates in appalling conditions. The first fleet for Australia left in 1787 and began to relieve the pressure just in time to the renewed pressure of war from the French Republic.

Portsmouth, at the time of the Napoleonic wars, was home to naval shipbuilding on a massive scale. There were woodworking shops powered by steam, including engines from Boulton and Watt. Marc Isambard Brunel invented machines for making the thousands of pulley blocks that the navy needed. He collaborated with Henry Maudslay who made the machine tools required. It was a huge enterprise that dominated the town. It was the first example of mass production in Britain.

We need to take a step back to understand what was happening. Naval shipbuilding was an ancient trade in which old habits died hard. Sawyers were protective of their back breaking work in the saw pit even though in other countries water powered sawmills were gaining popularity. Small businesses supplying largely hand made pulley blocks were equally protective of their lucrative contracts. The navy's demands were huge and change was needed. The right man at the right time was Samuel Bentham, the brother of the political economist and prison reformer Jeremy Bentham. Samuel was put in charge of the dock yard and set about radical changes.

1840 saw the French employ steam power for their battleships and Portsmouth needed to follow suite. A separate area was set aside and the necessary skills recruited. I write in How Britain Shaped the Manufacturing World of the transition to iron and steel hulls propelled by steam power.

With the navy and military the overwhelmingly dominant employer, its importance is underlined by the growth in population from 30,000 in 1801 to 260,000 in 1931.

Portsmouth docks served the Royal Navy in two world wars. In 1905 the yard launched the Dreadnaught which rendered obsolete the capital ships of the world's navies. It went on to launch one of the largest ships ever built in Portsmouth at 27,500 tons the Queen Elizabeth and the 25,000 ton Iron Duke in 1914. In recent years the building and maintenance of naval ships has fallen more and more to the private sector in companies such as Babcock International and BAE Systems Marine.

Employment in naval activity declined from some 22,000 in 1945 to 6,500 in 1985. Nevertheless, Portsmouth has attracted other major employers. Top of the list must come IBM with their UK Headquarters but followed by the Inland Revenue computer centre, the Board of Trade and Zurich Insurance.

Further reading:

James Cramer, The Book of Portsmouth (Buckingham: Barracuda Books, 1985)

Chelmsford manufacturing history

 A treat for any amateur industrial archeologist, in 1987 Stanley Wood published a booklet describing Chelmsford Industrial Trail updated by Tony Crosby and Dave Buckley in 2018. This offers the reader a wonderful taste of this late industrial town and I draw upon it in this blog piece, though far from entirely.

Chelmsford was where Marconi first manufactured and I wrote extensively of him and his business in both How Britain Shaped the Manufacturing World and Vehicles to Vaccines. Just a little earlier Colonel Crompton came to the town following a distinguished military career and bought a local iron works. This is at the heart of the development of electricity in Britain and, again I wrote of it in both books but also the American angle in this blog. There are many other connections with the town which I highlight below. So, to Chelmsford.

It was a Roman town as indeed was neighbouring Colchester. It was an agricultural centre opened up by the Chelmer and Blackwater navigation in 1797 and by the railway in 1843 with the opening of the Brentwood to Colchester line. The London Road Iron works was taken over by Richard Coleman in 1848 and three years later he was among the prize winners at the Great Exhibition. In 1866 the business became Coleman & Morton which produced highly regarded agricultural implements until 1907.

The Anchor Works, which Colonel Crompton bought in 1878, began life as an iron works in 1833 and was later taken over by THP Dennis another agricultural implement maker. Crompton made it a key actor in the electrification of Britain.

It was the coming of electricity and Cromptons which radically changed Chelmsford, not least because in due course its streets were lit by bright electric light. Dynamos needed power to drive them and neighbouring Colchester had James Paxman all too keen to get involved. Steam engines were a competitive market and so Cromptons developed a good number of fruitful relationships. In his Reminiscences he singles out Willans as his chief steam engine collaborator and describes the single generation unit that combined on one platform a dynamo made by Cromptons with a fast steam engine made by Willans & Robinson of Thames Ditton. Cromptons could claim credit for many prestigious installations including Lord Randolph Churchill's house and the Royal Courts of Justice. Of no less importance was the ability to use incandescent lamps in coal mines.

Of possibly as great importance there is a story of Crompton himself inspiring the young Sebastian de Ferranti whose influence in the British electrical engineering industry would exceed that of Crompton and I write of it in How Britain Shaped the Manufacturing World. Whilst Crompton acknowledges his possible influence on Ferranti he spells out the fact that they were on different sides of The Battle of the Systems. I describe that in the USA between Edison and Westinghouse in the blog piece I referred to earler. In Britain it was in London that Ferranti championed high voltage AC current from his Deptford power station, whereas Crompton made money out of more local schemes using a lower voltage DC. Crompton were great adapters.

Cromptons moved to a much larger factory in 1896 whose vast assembly bays enabled the company to build the big generators, transformers and switchgear needed by the new national grid in the twenties. After a period of investment by Armstrong Siddeley, Crompton merged with Parkinson of Leeds to become Crompton Parkinson which would later join their earlier rival Brush becoming part of Hawker Siddeley.

Of interest to me but perhaps less so to Chelmsford, Colonel Crompton was a champion of motorised transport for the army, first in India but then in the First World War. Crompton tells in his Reminiscences his role in the development of the tank. I wrote about the development of the tank in Ordnance but omitted a reference to Crompton in connection with the smaller, faster Whippet. As with so many inventions, there were many hands and brains involved.

The Marriage family had been millers in and around Chelmsford for many years, and in 1898 took the plunge into the twentieth century by building Chelmer Steam Mill with modern rollers rather than millstones.

Ernst Gustav Hoffmann's invention of an automatic lathe for making ball bearings was sufficient incentive for the building, also in 1898, of the Hoffmann Works for the production of ball bearings. In 1970, Hoffmann merged with Ransomes and Marles Bearing Co, a Newark business with a connection with the Ransomes of Ipswich, and the Pollard Ball and Roller Bearing Co of Ferrybridge in West Yorkshire to form RHP plc in Newark on the River Trent in Nottinghamshire.

Guglielmo Marconi at the age of 22, again in 1898, set up in a former mill in Chelmsford the first wireless factory in the world. The mill had worked with silk but closed in 1863 when French imports flooded the market. The mill was revived briefly by Samuel Courtauld of nearby Braintree. For Marconi the beginning was all about wireless communication with ships but it grew to become serious competition to the cable operators. In 1901, he famously transmitted a signal from Poldhu in Cornwall to Signal Hill in Newfoundland. I noted elsewhere that the electricity powering the signal was generated by a Hornsby engine. Marconi developed radio transmission and after the First World War would transmit programmes from Chelmsford to the small number of radio enthusiasts. The formation of the BBC by a group of radio manufacturers including Marconi in 1922 would accelerate the growth of broadcast radio in Britain.

The next Marconi connection with Chelmsford was radar where it manufactured many sets and components before, during and after the Second World War. Related to radar was television and it was the Marconi-EMI system that was adopted by the BBC and subsequent commercial channels. A research facility was built at Great Baddow on the outskirts of the town. The company designed and built studio and broadcast equipment in its New Street factory. The adjacent factory was built for the production magnetrons for radar and after the war was occupied by the English Electric Valve company manufacturing a whole range of electronic tubes. I write at greater length about Marconi and broadcasting in How Britain Shaped the Manufacturing World and Vehicles to Vaccines.

In the postwar era, Marconi became part of English Electric and expanded in aeronautical, marine and broadcasting. English Electric became part of GEC on the breakup of which the Marconi defence business joined with British Aerospace to become BAE Systems which still have a research facility at Great Baddow.

Away from electronics, Britvic opened a new factory in 1955 but moved its headquarters to Hemel Hempstead in 2012 and closed the Chelmsford factory.

The Chelmsford Industrial Trail includes a description of what happened to some of the factories mentioned. Marconi International Marine became a car showroom and Britvic a retail park. The new Marconi factory became a Homebase DIY store. This is a pattern seen in most former industrial towns. We know from the statistics that manufacturing has reduced in size, these specifics bring this home. It is of course brought home much more starkly to those many thousands of men and women who saw their jobs disappear.

Further reading

• W.J. Baker, A History of the Marconi Company (London: Methuen, 1970).
• Stanley Wood, Chelmsford Industrial Trail updated by Tony Crosby and Dave Buckley (Essex Society for Archaeology and History, 1987, 2018)
• R.E. Crompton, Reminiscences (London: Constable & Co, 1928)