The Home Office has just published a new UKVI approved SELT test listing wef 1st April 2020.
These UKVI approved English tests include the long established IELTS and Trinity SELTs as well as the SELTs offered by the new provider LanguageCert.
The offerings from LanguageCert were recognised as UKVI approved SELTs with effect from yesterday (3rd April 2020) and they span CEFR levels A1, A2, B1, B2, C1 and C2.
There are still no SELTs from Pearson which received Home Office approval as a UKVI approved SELT provider in December 2019.
The associated revised UKVI SELT secure test centre listing gives the Thai test venues on pages 31 and 32. There are now 6 IELTS SELT test centres and 1 LanguageCert SELT test centre in Thailand.