Editorial Research Index
Institutional briefings & primary regulatory analysis
Peer-reviewed research dossiers, quantitative market structure briefings, and statutory compliance analysis published by London Firm Ledger.
All published briefings
City Gazette
City of London, Dublin, and Gibraltar Financial Houses: Verifying Companies House Filings, UK PPON, and Part 4A Permissions
A structured verification framework distinguishing UK corporate incorporation and public procurement identifiers from FCA Part 4A prudentially regulated permissions.
Nigel Ashworth, FCSIRead dossier →
Prudential Rulebook
UK IFPR Capital Tiers and CASS 7 Client Money Segregation across London Matched-Principal Brokerage Houses
Examining how K-factor capital requirements (K-DTF, K-CMH, K-ASA) govern matched-principal and agency brokerage houses in the City of London.
Nigel Ashworth, FCSIRead dossier →