Environmental charity Greenpeace has tweeted this photo of the Shard climbers taking part in a training exercise yesterday. They appear to be using a ladder to climb through a hatch in the roof of a lorry.
The training appears to have been aimed at the first stage of the climb when the protesters emerge from a lorry via a ladder to start the ascent.
More top news
Still got an old style paper £5 note? Well, you only have until Friday to spend it in shops before it ceases to become legal tender.
Liang Sheng-yueh's girlfriend, who was found by his side, died three days before they were discovered.
The Tonight programme investigates how Brits living throughout the EU are facing up to an uncertain future.