The Channel Isle Banks mostly service wealth management clients and smaller UK expat savers and resident non-domicile clients. Much of the traditional offshore banks in Channel Isle have closed down in last 5 years. Banks are literally closing every few months and whole industry out there has taken a hit.
If you are just after a personal account then no introduction needed. If you have 25k just open an account online with Barclays or Lloyd's in the Channel Isles.
Just complete the online application. It is very straight forward. Make sure you have 25k and employment/self employment to justify that income. hap¤#"