This is the PLA (full version)

Find out about what happens on the tidal river Thames and the work of the Port of London Authority (PLA).
The river is home to: the UK's second biggest port; busiest inland waterway for freight and passengers; a major centre for rowing; and can be a stage for global events.
PLA operations to help keep the river safe include port control, providing ships' pilots, riverbed surveying, driftwood clearance and river traffic control for major events or large ship movements.