In a food processor, or in a bowl using an emulsion blender, combine the feta, yoghurt, mayo and garlic. Blend until smooth, scraping down sides as necessary.
Add the olive oil and blend well. Do not over blend it so that it has a little textured.
Add the oregano and chilli flakes. Give it one more quick mix.
Decanter the whipped feta into a serving bowl and decorate with a splash of olive oil, fresh thyme and some olives. Enjoy!