Expatriate rugby union players in England

Thomas Castaignède (born 21 January 1975) is a rugby union footballer from Mont-de-Marsan.
Born in Mont-de-Marsan, Aquitaine, Castaignède played as a junior and senior for Stade Montois in various positions, initially as fly-half or centre, and latterly as fullback. He joined Toulouse to help them win French titles in three successive seasons, and lifted the inaugural European Cup with the club. Castaignède then played for Castres Olympique before joining Saracens.
Developing his career in preparation for his retirement, Castaignède became a rugby union columnist for The Guardian, a television pundit for Canal+ and occasionally ITV Sport, and started an association and occasional work with French banking group Société Générale. On 10 May 2007, despite offers to return to France with various clubs, Castaignède announced his retirement from the sport after the 2007 Rugby World Cup in September, choosing to pursue a career in banking in London.

Philippe Sella (born 14 February 1962, in Tonneins) is French former rugby union player. He started as a rugby league junior in his home town before switching to rugby union. As a former French rugby union player, he held the record for most international appearances until beaten by Jason Leonard. He became a member of the International Rugby Hall of Fame in 1999, and the IRB Hall of Fame in 2008.Sella joined Saracens in 1996 from French side Agen. He and Australian Michael Lynagh were the catalysts for Saracens as they made the transition into the professional era, and Sella's presence helped other players make up their minds about joining the up-and-coming club.
He made a then world record 111 appearances (or caps) for France, and is one of only five players to have scored a try in every game during a Five Nations season.Sella was the linchpin in the midfield where he operated alongside stalwart Steve Ravenscroft. His experience, pace and vision helped Saracens to become a potent force in 1998 and his appetite for defence was amazing.He scored the opening try in the Tetley's Bitter Cup final in the same year, a trademark Sella finish. He showed pace, power and vision to run, swivel and crash over the line with his try then signalling the way for the floodgates to open.
He retired from rugby union later that year at the age of 36 and returned to France with his family.