Mike Tindall will appeal the £25,000 fine imposed on him today by the Rugby Football Union.
Tindall's England career appears to be over following his behaviour during the recent World Cup campaign in New Zealand, which has resulted in him being kicked out of England's elite squad and fined.
The Rugby Players' Association, though, has confirmed Tindall will appeal what it describes as "an extraordinary fine".
The RPA said: "The Rugby Players' Association has today noted the extraordinary fine handed down to Mike Tindall following the disciplinary process after the Rugby World Cup.
"Mike will be appealing this unprecedented fine as per the terms of the EPS agreement. There will be no further comment from Mike Tindall or the RPA at this time."