Changes

| style="vertical-align:top;" | 5. “Engineer” || Whenever the word "Engineer" occurs herein it shall be taken as meaning Edward Wilson <ref group="note">GWR Engineer Edward Wilson was previously Locomotive and Permanent Way Engineer for the Oxford, Worcester and Wolverhampton Railway and later the West Midland Railway. He died on 26 August 1877; resident Engineer Mr Tyrell saw the project through to completion.</ref> of 9 Deans Yard Westminster or n in case of his death incapacity or removal the Engineer in Chief for the time being of the Company.