Visiting Government of Jersey
British nationals do not require a visa to enter Jersey. Just a photographic ID is required for security reasons.
All other nationals if they are lawfully in UK can travel to Jersey without a separate visa.
Checklist of things to take along
You should take following things to Jersey:
a) A valid credit card or cash
b) All necessary documents
c) Complete information about your accommodation
d) Maps of different areas
Things allowed for tourists
a) You can bring 200 cigarettes or 100 cigarillos or 50 cigars or 350 grams of tobacco
b) 1 litre of refined beverages or four litres of sparkling or fortified wines and four litres of other wines or spirits.
c) 60 cc/ml perfume
d) 250 cc/ml eau de toilette
e) Only £340 worth of other commodities