perhaps they were under instructions not to find any bats.
The new Heathrow extension was chosen, among other things, because some rare wildflower was reported to be in a meadow in the alternative site.
When attempts were later made to find this wildflower, there was no evidence that it had ever existed.
Funny, that.
Fancy the governments preferred option being supported by a non-existent flower.
"They will also argue that the Secretary of State was wrong to reject Gatwick as an alternative to Heathrow on the grounds that expansion at this location might threaten a species of orchid."
https://www.hillingdon.gov.uk/article/2525/Councils-back-in-court-to-challenge-Heathrow-expansion
can't find the later report.
when they extended the duelling of the A30 in Cornwall their were three options, the least preferable was Goss Moor, there was a substantially large Eu grant available to works that avoided endangering various species so suddenly rare butterflies were found in certain locations which meant a hundreds of millions grant to build where they wanted to in the first place.