Apparently this is the case, as the remains of the German ships at Scapa Flow were at one point considered a national strategic resource but no longer. It's still used for super critical applications.
Lead from ancient Roman times has also been used where atmospheric pollutants & radioactivity are an issue.
According to the scrupulously accurate wikipedia, the UK has 3,555 glowing routemasters parked up.
As our buses are filled with proper, deadly, hairy chested, manly high level waste (and most of them are parked up down the road); and the Jap buses are full of gnat's piss, I'm not exactly shitting bricks TBH.
The biggest error was building a Nuclear plant in an earthquake/Tsunami zone.
The UK is free from both of these types of disasters so do I spot a huge export potential.
The stark fact is we need nuclear if we are not to be sitting in the dark and cold further down the line (very possibly the near future) yet what chance do we have when you get the sorts of protest like yesterday in Sussex where that silly tart green MP managed to get herself arrested.
As I understand it, with a tsunami you get a deep column of water moving across a deep ocean. It's little more than an ocean swell, but moving at a few hundred miles an hour.
Tsunami prone locations need a combination of a really deep ocean that rapidly shelves upwards, and coastal shape also affects it. As the swell hits it rapidly slows down, the water piles up and a BFO wave suddenly rears up out of nowhere when you're sat on your sun lounger. In fact the trough hits first, so the locals know to leg it if the tides starts going out when it shouldn't.
With the UK the sea is fairly shallow, so the BFO wave 'breaks' a relatively long distance offshore, disappating the energy and size of the wave. Never say never with any natural event, and tsunamis have occurred in the UK, but the 30 foot wave and coastline dropping another 5 foot variety aren't considered to occur at anything other than negligible frequency.