While Waterloo may have been stripped of previous titles, it still holds a major accolade. With 24 platforms in use, it's the largest train station in the UK. The largest station outside of London is Edinburgh Waverley, with 20 operating platforms.

The answer to which station is the "biggest" depends on whether you measure by the number of platforms or physical floor area. In 2026, London Waterloo remains the biggest train station in the UK by platform count, featuring 24 platforms and serving as the busiest gateway for commuters from the south and west. However, if you measure by total floor space and acreage, London Waterloo is also the largest, encompassing a massive footprint on the South Bank. Another contender for the "biggest" title is Edinburgh Waverley, which is the largest station outside of London by acreage (roughly 25 acres) and features a sprawling, subterranean design. In terms of passenger volume, Waterloo was historically the leader, but in 2025 and 2026, London Liverpool Street has frequently surpassed it as the most-used station in the country due to the massive success of the Elizabeth Line. Regardless of the metric, Waterloo stands as the definitive "titan" of the British rail network, acting as the primary terminus for millions of long-distance and suburban journeys every year.