The six women who are scaling The Shard building in London are just 18 metres from the top, according to Greenpeace press officer Ben Stewart.
One climber has been nominated to "free climb" the final ascent, meaning she will use no aids such as ropes.
The #iceclimb women are 18m from the top. they've chosen Wiola, 23, from Poland to make an attempt on the summit. She's going for it. Now.
Wiola is the youngest #iceclimb woman. She's free-climbing the final 18m, a third of a kilometre in the sky, right now. Yes, free-climbing.
More top news
A joint letter from 225 world leaders and experts calls for quicker action to avoid a deep global recession.
The covers feature lion and pilot designs, and are to be worn over the top of a young traveller’s own face mask.
Police data obtained by the RAC revealed that the highest speed was clocked at 151mph on the M62 motorway in West Yorkshire.