He remained MP for Northamptonshire through the Interregnum 1648–1660 and was appointed Lord Chamberlain to Oliver Cromwell in 1657. His public career ended in 1660.
Throughout the Interregnum, he maintained his position as MP for Northamptonshire until 1660, when he was appointed Lord Chamberlain to Oliver Cromwell in 1657, marking the conclusion of his public career.