The Welsh government has been accused of spending over £4m on ‘the most expensive birds’ nest in history’ after buying land for a music festival – which cannot be used due to ospreys.

The Labour-run administration paid out £4.25m for a farm to host a spin-off event from the annual Green Man music and cultural festival held each August.

The land, at Gilestone Farm, near Brecon, Powys, has even lost £500,000 in value since it was purchased in 2022 – and not a single note of music has been played there.

Now a Welsh Parliament committee has raised ‘serious concerns’ over the purchase and demanded a full review.

The Senedd's public accounts and administration committee said the decision to buy the farm was taken with a ‘lack of thorough due diligence’.