The field finally adopted by Mr. Hope was the _Parliamentary Bar_, at which, as we have seen, he had practised to a certain extent from the first, though with considerable interruption from the legal and financial affairs of his college and the Sarum Chancery, as well as other weighty business, including in 1839 services rendered as Counsel to the Government in the preparation of the Foreign Marriages Bill; in 1843 of the Consular Jurisdiction Bill, the report which he furnished on which, to be seen in the Parliamentary Records, would alone have been sufficient to have made a great reputation in that particular line; and in 1843-44 he was engaged by Government in the matter of the Franco-Mexican arbitration to prepare a report on some points in dispute between France and Mexico, which had been submitted to the arbitration of Great Britain. I presume that his retainers in these cases would be principally due to the fact that his brother, Mr. George W. Hope, was now a member of the Government as Under Secretary of State for the Colonies in Sir Robert Peel's administration. But the 'fame' that had already gone abroad regarding him, particularly for his learning in all matters that touched ecclesiastical law, would have been sure, independently of private interest, to have brought him early into prominence. The Ecclesiastical Courts Bill in 1843 engaged much of his attention, and his share in the legal business connected with troubles of that year at Oxford has been noticed in its place. On October 26, 1843, he took his degree of D.C.L. at Oxford. In 1844, at the suggestion of the Bishop of London (Right Rev. Dr. Blomfield), he was accepted by the Lord Chancellor as one of the persons to consider the chapter on offences against religion and the Church in the proposed Code of Criminal Law.
In a short, time, however, his practice seems to have merged in the department with which his name is principally connected, that of railway pleading. This branch of the profession, though affording little or no scope for those powers of oratory which his first speech before the Lords showed that he possessed, nor yet opening those avenues to power and fame which usually tempt minds of his class, were undoubtedly highly lucrative, and by this time Mr. Hope's charities must have nearly exhausted his modest patrimony. It had also one great advantage, in its business being principally confined to the Parliamentary session, thus leaving him free to travel six months in the year. I have seen it stated that in conversation with a friend he gave this as his chief reason for adopting it. He may have said so half in jest; but there can, I believe, be little doubt that a far deeper reason was that the Parliamentary bar was likely to present fewer cases of difficulty in point of conscience than he would have had to encounter in the Common Law courts.