History of Cardiff Docks: Coal, Trade and Tiger Bay

Cardiff’s docks turned a modest town on the River Taff into one of the busiest coal ports in the world. The story runs from a first dock opened in 1839, through an export boom that peaked just before the First World War, to the decline of the coal trade and the redevelopment of the area as Cardiff Bay.

Along the way the dockland district of Butetown, widely known as Tiger Bay, became one of Britain’s most diverse communities. Some details of the early period are debated, and where they are, this account says so.

Before the docks

In the early nineteenth century Cardiff was small compared with today. Census figures put its population at under two thousand in 1801. Its growth was tied to the iron and coal of the South Wales valleys, particularly Merthyr Tydfil, where ironworks needed a route to the sea. The Glamorganshire Canal, opened in the 1790s, carried iron down to Cardiff, but its limits and the heavy traffic on it created a demand for better access to deeper water.

The Bute West Dock

The solution came from the Marquess of Bute, whose family owned much of the land around the town. The Bute West Dock opened in 1839, a significant moment that gave ships a sheltered, deep-water berth right in the town. Its success was helped by the Taff Vale Railway, which opened in 1841 and linked the coalfield directly to the port.

More docks followed. The Bute East Dock arrived in 1855, Roath Basin and then the Roath Dock in the later nineteenth century, and the Queen Alexandra Dock in 1907. Meanwhile Penarth Dock, across the Ely estuary, opened in 1865 and also exported coal. Together these formed the dock system that shaped the city, and by 1901 Cardiff’s population had passed 150,000 as workers, shippers, clerks and families poured in.

The docks were also busy with imports. Pit props for the mines, timber, grain and other bulk cargoes arrived by sea, while shipyards, ship repairers and coal-trimming gangs gave the waterfront its own industries. Dock work was hard, dangerous and often casual, with men hired by the day when ships came in.

The coal boom

As deep mines opened up in the valleys, steam coal from South Wales found customers around the world, and ships called at Cardiff to load it for use as fuel at sea and in industry. Cardiff’s exports are commonly given as exceeding ten million tons around 1913, the best-known peak, although figures vary between sources depending on what is counted.

The trade created a financial district too. The Coal Exchange in Mount Stuart Square, built in the 1880s, was where owners, shippers and buyers set prices. A popular story says the first million-pound cheque was signed there; historians treat the claim cautiously, so it is better described as local legend than proven fact.

Welsh steam coal had a reputation for burning cleanly and hot, and it was widely favoured as fuel by steamship companies and by navies, which helped the port’s international standing. Shipping and coal-owning firms set up offices around Mount Stuart Square, and the district’s grand Victorian and Edwardian buildings still show where the money went.

Cardiff was granted city status in 1905 and became the capital of Wales in 1955. Its dock wealth was a major driver of the first of those.

Tiger Bay and a diverse community

Butetown, the district next to the docks, drew sailors and workers from many places. Seafarers from Africa, the Caribbean, Arabia, Somalia, Yemen, Norway, Ireland and elsewhere settled in the streets near the quays. The area was given the nickname Tiger Bay, a name whose origin is uncertain: explanations have been put forward but none is settled.

The community faced prejudice. In 1919, riots broke out in Cardiff and other British port cities, with Black and Arab seafarers among those targeted. This is a documented and painful part of the docks’ story, and it sits alongside the area’s long record as a place where different cultures lived side by side. Butetown later became associated with figures such as the singer Shirley Bassey, who was born there in 1937.

Decline

The coal trade peaked early in the twentieth century and then faded. Reasons included competition from oil as ship fuel, losses of foreign markets during and after the First World War, the Great Depression and the decline of the coalfields. Many dock workers lost their jobs during the 1920s and 1930s, and bombing in the Second World War damaged parts of the area. Later, changes in cargo handling and the ending of coal exports reduced traffic further. The East Moors steelworks, a major dockside employer, closed in 1978, and by then large parts of the old docks lay derelict or underused. Many Butetown residents saw their homes and streets cleared or changed during the postwar decades, which left a lasting sense of loss that some local accounts still describe.

The docks in wartime

During both world wars Cardiff’s docks served as a strategic port, handling coal for the Royal Navy and, later, supplies and troops. In the Second World War, air raids hit the docks and the surrounding streets, and the bay area emerged from the war damaged and short of investment. Postwar plans for the area competed with the need for housing, and decisions taken then shaped what regeneration planners inherited decades later.

Regeneration and the barrage

In 1987 the Cardiff Bay Development Corporation was set up to rebuild the declining dockland. A central project was the barrage across the mouths of the Taff and Ely, completed in 1999, which impounded the tidal water as a freshwater lake. New landmarks followed, including the Wales Millennium Centre in 2004 and the Senedd in 2006. The old Pierhead Building, built in 1897, survives as a reminder of the dock company’s heyday.

Not everyone agreed about the changes. The barrage involved the loss of tidal mudflats, and there were concerns about wildlife habitat and the effect on residents. The Cardiff Bay Wetlands Reserve was created partly as compensation.

Why it still matters

The docks explain why Cardiff exists as a capital city, why its centre has Victorian commercial architecture, and why Butetown holds such a mixed heritage. For modern walks that pass many of these sites, see the Cardiff Bay waterfront guide, and for a ride across the water past the sites described here, see the Pier Head to barrage journey.

Frequently asked questions

When did Cardiff Docks open?

The first major dock, the Bute West Dock, opened in 1839. Further docks followed over the rest of the nineteenth century and into the early twentieth.

What was exported from Cardiff Docks?

Coal was the main export, carried from the South Wales valleys by rail, with iron and steel also shipped in earlier decades. Imports included timber, grain and other bulk goods.

Why is it called Tiger Bay?

The origin of the name is uncertain. Several explanations exist, but sources differ, and none is accepted as definitive.

What happened to the docks?

Coal exports declined from the 1920s, large areas were redeveloped from the late 1980s, and the barrage and new buildings created today’s Cardiff Bay. Some commercial port activity continues elsewhere in the area.