Yes.
At least a passport.
A Passport.
do I need a passport to travel from south wales UK to jersey
An identity card is sufficient.
Yes, everyone needs a passport to enter the United Kingdom.
Yes you need a passport whenever you leave the United Kingdom because you need it to get back again.
British subjects do not need a passport to enter Ireland if they are arriving directly from the United Kingdom, but you may need your passport for your airline, travel company etc and should check beforehand
No, minors do not need a passport to travel within the United States.
Because the UK government has a policy to not join Schengen.
no, both countries are part of the EU
No, a passport is not required for travel within the United States.
No, you do not need a passport to travel from the United States to Puerto Rico as it is a U.S. territory.