When travelling to the USA, British citizens require passports with an integrated chip (shown on the front by a small rectangular symbol beneath the word PASSPORT), valid beyond the return date from the USA. Visas are not normally required for entry, but visitors must apply for an ESTA online with US Immigration at least 72 hours before departure at www.cbp.gov/esta. The current charge is $40 for British Citizens. British subjects and anyone who has a criminal record or has ever been arrested should consult the US Embassy as a visa may be required. Note too that if you have visited North Korea, Iran, Iraq, Sudan, Syria, Libya, Somalia or Yemen since March 2011, or Cuba since 12 January 2021, or have dual nationality with any of these countries, you do require a US visa and cannot travel on the Visa Waiver Program.