A Pembrokeshire film company is at the heart of prestigious celebrations starting this week to mark the 100th anniversary of the Port of London.

Radiant Media, from Lawrenny in Pembrokeshire, spent last summer flying high and low over the river Thames, getting wet out at sea and capturing every element of life on the water to create a keynote film to mark the Port of London's Centenary.

"We wanted to give the film a really dramatic feel, and so the terrible weather this summer oddly helped us!" said Rachel Hicks, Radiant director.

"We flew eight miles out to sea in a helicopter to show how a pilot boat brings in a massive container ship longer than two football pitches, we followed divers searching for old shipwrecks on the river bed and filmed 300 boats taking part in a 22-mile Thames rowing race, some dressed as vikings!" she said.

"What was crucial, was to convey the huge variety of work the Port of London Authority does along 95 miles of river in just a few entertaining minutes."

The PLA celebrates its centenary on March 31. The five-minute film will be shown at a reception for 600 people at the Mansion House in London, then feature in a three-week exhibition about the PLA at the Museum of London Docklands. If you want a sneak preview, you can see the film on the PLA website, http://www.pla.co.uk">www.pla.co.uk.

Director of corporate affairs for the PLA, Alistair Gale, said: "London isn't just one of Europe's great cities - it's one of Europe's great ports. We wanted a film which portrayed the work of the Port of London Authority today. I am thrilled with Radiant's film; it captures the excitement and diversity of our work."