In January 1554 Digges took part in an unsuccessful rebellion led by the Protestant Sir Thomas Wyatt, who opposed the projected marriage between Philip II of Spain and England's new Catholic Queen, Mary I. Digges was convicted of high treason, attainted, and condemned to death. His life was pardoned on 1 April 1554, but according to Johnston 'his lands and goods, which had been seized after his attainder, continued to be held subject to payment of recognizances to the crown'. In February 1555 Digges was fined 400 marks. After being paid off in instalments, the fine was discharged on 7 May 1558. The date of Digges' death is unknown; he is thought to have died about 1559: