The conservationist lobby, led by Marcus Binney, went into action.

Organizations which are selling products that are the target of health or conservationist lobbies are often to be found sponsoring activities such as sporting events and animal welfare campaigns.

Miriam Clegg coaxed into one of Winston Churchill’s pet hobbies (although with one eye to the conservationist lobby, she wasn’t actually bricklaying but turning her hand to drystone walling).

Primarily, industrial lobbies oppose the Act because they view it as an obstacle to development while conservationist lobbies defend the Act, claiming that it has prevented the extinction of the Bald Eagle (the U.S. emblem) and the Grizzly Bear, as well as of some other less well-known species.