His own chambers
In 1910, Horace Avory became a judge. Hastings first found out when he read the report in the morning newspapers, and was dismayed that he would again have to search for a tenancy at another chambers. He instead had the idea that he could take over Avory's chambers himself, allowing him to avoid the trouble of finding a new tenancy. Maintaining a set of chambers was very expensive, however; as well as paying the rent, the head of chambers would be expected to pay the clerks. Hastings suggested to Avory that Avory could pay the rent, and Hastings would then pay him back when he had the money. Despite Avory's reputation as "cold and hard" he agreed to this idea, and even let Hastings keep the furniture, including Avory's valuable chair which had once belonged to Harry Poland. Although this was a good start, Hastings was not a particularly well-known barrister, and cases were few and far between. To get around the lack of funds Hastings accepted a pupil and for the next year Hastings lived almost exclusively off the fees that the pupil paid him. To maintain the appearance of an active and busy chamber Hastings had his clerk borrow papers from other barristers and give them to the pupil to work on, claiming that they were cases of Hastings.
His first major case was "The Case of the Hooded Man". On 9 October 1912, the driver of a horse-drawn carriage noticed a crouching man near the front door of the house of Countess Flora Sztaray in Eastbourne. Sztaray was known to possess large amounts of valuable jewellery and to be married to a rich Hungarian nobleman, and assuming that the crouching man was a burglar the driver immediately called the police. Inspector Arthur Walls was sent to investigate, and ordered the man to come down. The man fired two shots, the first of which struck and killed Walls.
A few days after the murder, a former medical student named Edgar Power contacted the police, showing them a letter that he claimed had been written by the murderer. It read "If you would save my life come here at once to 4 Tideswell Road. Ask for Seymour. Bring some cash with you. Very Urgent." Power told the police that the letter had been written by a friend of his called John Williams, who he claimed had visited Sztaray's house to burgle it before killing the policeman and fleeing. Williams then met with his girlfriend Florence Seymour and explained what had happened. The two decided to bury the gun on the beach and send a letter to Williams' brother asking for money to return to London, which was then given to Power.
Power helped the police perform a sting operation, telling Seymour that the police knew what had happened and that the only way to save Williams was to dig up the gun and move it to somewhere safer. When Seymour and Power went to do this, several policemen (who had been lying in wait) immediately arrested her and Power (who was released a few hours later). Seymour was in a poor condition both physically and mentally, and after a few hours she wrote and signed a statement which incriminated Williams. Power again helped the police, convincing Williams to meet him at Moorgate station, where Williams was arrested by the police and charged with the murder of Arthur Walls. Williams maintained that he was innocent of the murder and burglary.
Williams' case came to trial on 12 December 1912 at Lewes Assizes, with Hastings for the defence. Despite a strong argument and little direct evidence against Williams, he was found guilty and sentenced to death. The case generated large amounts of publicity, as well as an appeal hearing at which Hastings demonstrated his legal skills. The case established him as an excellent barrister, particularly when it came to cross-examination. He was commended by both the initial judge, Arthur Channell, and the presiding judge hearing the appeal, Lord Alverstone, for his skill in his defence of Williams. The advertisement this case gave of his skills allowed him to move some of his practice from the county courts to the High Court of Justice, where his work slowly increased in value and size.
The case made his name well-known and helped bring him work, but he still mainly worked on cases in the county courts. These did not pay particularly well, and to get around this lack of money his clerk had him take on six new pupils at once. The short length of county court cases and the number of cases Hastings got meant that he dealt with up to six cases in a single day, running from court to court with his pupils in a "Mafeking procession" which he later described as "the forerunners of the modern Panzer division".
Shortly before the outbreak of the First World War, Hastings and his family were preparing to travel to Germany for a holiday. On the day of departure he received a note from a client, which read "You tell me you are going to Germany. Don't go, we shall be at war within forty-eight hours". Hastings heeded this warning, and remained in England – war was declared between Britain and Germany less than two days later. Hastings himself volunteered to serve in the armed forces, but was rejected as medically unfit.
His next noted civil case was that of Gruban v Booth. John Gruban was a German-born businessman, originally named Johann Wilhelm Gruban, who had come to England in 1893 to work for an engineering company, Haigh and Company. By 1913 he had turned the business from an almost-bankrupt company to a successful manufacturer of machine tools, and at the outbreak of the First World War it was one of the first companies to produce machine tools used to make munitions. This made Gruban a major figure in a now-large market, and he attempted to raise £5,000 to expand his business (equivalent to approximately £498,800 in 2015). On independent advice, he contacted Frederick Handel Booth, a noted Liberal Member of Parliament who was chairman of the Yorkshire Iron and Coal Company and had led the government inquiry into the Marconi scandal. When Gruban contacted Booth, Booth told him that he could do "more for [your] company than any man in England", claiming that David Lloyd George (at the time Minister of Munitions) and many other important government officials were close friends. With £3,500 borrowed from his brother-in-law, Booth immediately invested in Gruban's company.
Booth worked his way into the company with a string of false claims about his influence, and finally became chairman of the Board of Directors by claiming that it was the only way to avoid Gruban being interned due to his German origin. As soon as this happened, he cut Gruban out of the company, leaving him destitute, and eventually arranged for him to be interned. Gruban successfully appealed against the internment, and brought Booth to court.
The case of Gruban v Booth opened on 7 May 1917 in the King's Bench Division of the High Court of Justice in front of Mr Justice Coleridge. Patrick Hastings and Hubert Wallington represented Gruban, while Booth was represented by Rigby Swift and Douglas Hogg. The trial attracted such public interest that on the final day the barristers found it physically difficult to get through the crowds surrounding the Law Courts. While both Rigby Smith and Douglas Hogg were highly respected barristers, Booth's cross-examination by Hastings was so skilfully done that the jury took only ten minutes to find that he had been fraudulent; they awarded Gruban £4,750 (about £284,900 in 2015).