The website that allows visitors to buy a ticket to travel up Europe's tallest building has crashed less than hour after opening.
The View from the Shard experience does not open until February.
Visitors to the website were greeted with the following message this morning.
Thank you for visiting The View from The Shard website.
We are currently experiencing technical difficulties due to exceptionally high demand.
We apologise for the inconvenience caused and are working hard to resolve this problem.
Please keep checking the website for further updates.
Europe's tallest building has been officially unveiled in central London with a spectacular laser show across the capital.
Europe's tallest building, the Shard, will be officially opened later with a spectacular laser show high above central London.