http://www.legislation.gov.uk/uksi/2003/3103/article/4/made
The Extradition Act 2003 (Commencement and Savings) Order 2003
Extradition
King's Printer of Acts of Parliament
2016-10-05
EXTRADITION
This Order brings all of the provisions of the Extradition Act 2003 into force on 1st January 2004 subject to the following exceptions. All extradition requests received on or before 31st December 2003 will continue to be dealt with under the provisions of the Extradition Act 1989. Any post extradition requests made which relate to a person extradited to or from the United Kingdom on or before the 31st December 2003 will continue to be governed by the provisions of the 1989 Extradition Act. All requests received by the British Overseas Territories (with the exception of Gibraltar which will be designated as a category 1 territory), the Bailiwick of Jersey, the Bailiwick of Guernsey and the Isle of Man will continue to be dealt with under the provisions of the Extradition Act 1989 until Orders in Council are made under sections 177, 178 or 222 or until any of those territories passes their own legislation to deal with extradition.
4
The coming into force of the Act shall not apply for the purposes of an extradition made from or to the United Kingdom on or before 31st December 2003.