A new travel system for visitors to the UK comes into force from Wednesday for citizens of 85 different countries including the US and Australia.
The UK government says electronic travel authorisation (ETA) will streamline the immigration system, speed it up and make it more secure.
Once approved, an ETA would allow you to stay in the UK for up to six months for things like tourism, business or short-term study.
Dual nationals cannot get an ETA, and will need to show either a British passport or a certificate of entitlement to enter the UK.
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00:00 – 00:36 What is an ETA?
00:36 – 00:58 Do I need an ETA?
00:58 – 01:37 Dual nationals and ETAs
01:37 – 02:07 How to get an ETA