Ruth Kedward, an admin of the group, set up a petition against the sale of the cottage.
“It’s a very historic and iconic building. It’s part of the history of the canal,” she said.
“The Canal and River Trust claim to be custodians of the largest collection of industrial heritage. They are planning to auction off the Toll House and are in receipt of public money to build a visitor centre on the other side.”
The Canal and River Trust, with Torfaen and Caerphilly councils, have received funding from the Welsh European Funding Office to provide an activity hub at the site.