The Bat Conservation Trust as the name suggests focuses solely on UK bat populations. They help bats through research, policy advise, bat box installation, bat friendly home development and education. They achieve all this with the help of over 5000 members.

They have a small set of bat species currently in circulation plus a standard and life member badges.

New for 2019
BCT Barbastelle Bat
BCT Bechsteins Bat
BCT Common Pipistrelle
BCT Noctule Bat
BCT Lesser Horseshoe
BCT Brown Long-eared Bat
BCT Brown Long-eared Bat 2

Last image showing the original backing card design.

Membership only pin badges. More information here:

BCT Members Badge
BCT Life Member