@Steve *******
actually "yes"..
I got this answer:
Is it possible to use a UK ISA as proof?"**
- **Yes, but only if:**
1. The ISA is **considered a bank account** (not an investment product).
2. You provide **official statements for the last 3 months** in English or with an official translation.
3. The statements clearly show **a balance equivalent to 500,000 THB or more** (converted at the current exchange rate).
- **Important note:**
- Some Thai embassies or immigration offices may have **stricter requirements** and prefer traditional bank accounts.
- **Recommendation:**
- Verify directly with the **Thai embassy in your country** (or where you are applying).
- Prepare a **bank letter** confirming that the ISA is fully liquid and not encumbered.