If you are a UK resident and over 18 years old, you can open an InvestEngine ISA or General/Business Account.
Residents of the Channel Islands or the Isle of Man can open a General Account with InvestEngine but not an ISA.
Unfortunately at this moment we are not able to open accounts for U.S. citizens, even if you are resident in the UK or hold dual nationality. We hope to provide this service for U.S. citizens in the near future.