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]]In 1864 Wilson he established his own practice, Edward Wilson & Co, and worked on projects for a number of railway companies including the GWR. He died on 26 August 1877; resident Engineer Mr Tyrell saw the project through to completion.</ref> of 9. Deans Yard Westminster or in case of his death incapacity or removal the Engineer in Chief for the time being of the Company.