One who wishes to become a practising barrister must first obtain a "pupillage". This apprenticeship is known as pupillage or devilling. Maugham completed his pupillage in the chambers of Lord Irvine. His first ever pupil was Audrey Eu, who commenced her pupillage in 1978. He served pupillage under Peter Millett, later Lord Millett. After pupillage with Michael Mansfield, she joined the chambers of Barbara Calvert. Tse then finished his pupillage in Hong Kong under Justice Peter Nguyen. Wong undertook pupillage with Andrew Li, and was the latter's last ever pupil. However, before they can practise independently they must first undertake 12 months of pupillage. Second-six pupils in commercial sets can go their entire pupillage without ever appearing in court. A trained lawyer, he completed his pupillage at Singapore law firm Lee & Lee. After a pupillage with Maurice Drake, he specialised in patent and trademark law. Opportunities for earning outside of pupillage are limited by time constraints. Such chambers' recruiting deadlines broadly mirror those of the Pupillage Portal sets. He then resumed his legal career with a one-year pupillage, before going up to Cambridge.