This is a new collection on Ancestry, just 3,374 records for the Napoleanic War era.
It’s sourced from the following holdings of the City of Westminster Archives Centre.
Liberty of the Rolls: Certificates of Enrolment and Embodiment of Militia Men and Substitutes, 1779-1813
Liberty of the Rolls: Constable´s Return of Persons Liable to Serve in the Militia, 1806
Liberty of the Rolls: List of Persons Liable for Service in the Militia, 1783
Liberty of the Rolls: Names and Addresses of Principals and Substitutes, 1797