He studied in London at the Slade School, Royal College of Art and the Royal Academy.
He is best known for his work as an official war artist for the Royal Army Medical Corps during World War I. While commissioned by the Royal Army Medical Corps, Lobley created 120 paintings. These include scenes of rehabilitation in the Queens Hospital for Facial Injuries at Frognal, Sidcup and numerous other military hospital scenes. Of the Royal Army Medical Corps in training at Blackpool.
Of casualty clearing stations near battlefields in France.
And of wounded soldiers arriving at Charing Cross Station in London. lieutenant has been said of Lobley that "Like many of the artists who witnessed the War first hand, he was deeply affected by what he had seen.
His paintings of the War do not glorify it at all." In addition to his wartime work, Lobley painted figures, portraits and landscapes. Whilst in London, he is said to have painted "many charming views of London, showing the many parks and squares".