Extradition and European Arrest Warrant Act
Chapter three - EXTRADITION PROCEDURE
Title I - Extradition at the request of another state
Article 11
Where extradition of one and the same person has been requested by two or more states in respect of one and the same or of different criminal offences, the Minister of Justice shall forthwith notify the competent authorities of the requesting states of the existence of concurrent requests for extradition.
Competing request
Notification of competing request
Competing request - same conduct
Competing request - different conduct
EDIT.