A valid passport and a return ticket are required by all visitors to New Zealand except Australian Nationals who do not require a return ticket. A visa is not required by British nationals for a stay of up to 6 months, EU and US nationals do not require a visa for a stay of up to 3 months. Any extension to these durations of stay require a visa which are available from the local New Zealand Consulate or High Commision.
All visa and immigration related enquiries should be directed towards the New Zealand High Commision:
New Zealand High Commission New Zealand House 80 Haymarket London SW1Y 4TQ Tel: (020) 7 930 8422 Fax: (020) 7 839 4580.
If you require UK representation while abroad you should contact the British High Commision:
British High Commission 44 Hill Street Wellington 1 New Zealand Tel: +  (4) 472 6049 email: email@example.com British
There are also Consulate-Generals in Auckland and Christchurch.
Tourist information is dispensed by the New Zealand Tourism Board:
New Zealand Tourism Board PO Box 95 Fletcher Challenge House 89 The Terrace Wellington New Zealand Tel: (4) 472 8860 Fax: (4) 478 1736