Cross-border money transfers and international payment services.
All 4 are Private Banking — most in St Peter Port.
St Peter Port·Professional Service
This international bank's Guernsey branch facilitates cross-border payments and transfers for its retail, commercial, and private banking clients.
From their website
Money Transmission
St Peter Port·Service·Est. 1996
This institutional banking arm of NatWest Group facilitates international payments as part of its transactional banking services.
St Peter Port·Professional Service·Est. 2016
The Guernsey branch of a major bank, facilitating international payments and transfers for its clients.
St Peter Port·Professional Service·Est. 1967
This private bank provides international payment services as part of its comprehensive banking and treasury offerings.
Other capabilities nearby in the graph — the count is how many businesses do each.