LONDON, England (CNN) -- A campaigner for a British grandmother on death row in Texas made a unique plea for her life Thursday -- from atop a plinth in London's Trafalgar Square. Brian Capaloff uses his slot on the plinth in Trafalgar Square to campaign for clemency for Linda Carty. Linda Carty, 51, recorded her message this week from the prison in Gatesville, where she is serving her sentence, as part of an effort to win clemency. Campaigners say Carty's trial was "catastrophically flawed" and that her court-appointed lawyer failed to take steps that could have at least spared her the death penalty. An appeal is pending in the 5th U.S. Circuit Court of Appeals.
@highlight
Campaigner for Briton on death row in Texas pleads for her life in London
@highlight
Linda Carty, 51, recorded a message this week from prison
@highlight
A man stood on plinth in Trafalgar Square and played Carty's message aloud
@highlight
Carty is accused of taking part in 2001 murder of a 25-year-old Texas woman
"@placeholder plans to kill her by lethal injection, which is a painful and lonely death."