I used to keep getting calls from all these numbers from the UK and Switzerland (when I blocked one, they used another) to pester me into investing, using the line “I understand that you are interested in investing in the financial markets”.
I suspect (read: do not have proof) that this is an investment scam, whereupon I was told that you pay “a small amount of £195” to start your account at which point I’m sure that they’ll just never speak of it again?
Here are the numbers that I've been called from with a guy with an Eastern European-sounding accent:
+44 (0) 20 3807 9363
+44 (0) 20 8089 2520
+41 34 508 72 78 (ZN Region Bern-Emme)
+41 61 508 30 75 (ZN Region Basel)
I suspect that these might be Skype numbers (as the default UK Skype prefix is London's 020) but I may be wrong.
Have fun!