[1][2] Lambert worked for a time in Manchester, Liverpool and London, before moving to Dublin in 1862 to take up a position as assistant to J. J. Farrell, Wicklow Street.
In response to a cattle plague in Britain, the Irish administration sent Lambert to England to study the disease in January 1866, and report back on how to prevent it spreading to Ireland.
The Irish government decided to cull herds to stop the spread of the disease, which proved successful in containing it.
At Store Street, the practice had a surgery, a forge, an infirmary for ill horses, an indoor riding school, stables, and apartments for his employees.
Despite putting up a legal battle, Lambert eventually lost a portion of the property to the Dublin, Wicklow and Wexford Railway Company in the late 1880s.
From 1869 to 1910, Lambert was the veterinary surgeon at the Royal Dublin Society's horse show, as well as sometimes serving as a referee.
In 1870, he was appointed to the board of examiners of the council of the Royal College of Veterinary Surgeons, and served as vice-president in 1884.
[1] Lambert was the veterinary surgeon for a number of lords lieutenant of Ireland, and was present at the royal stud of horses at the Viceregal Lodge in 1900 when Queen Victoria visited Dublin.
During Edward's visit to Ireland in 1903, his Irish terrier Jack died suddenly, prompting suspicions that he had been poisoned.