Does the 800,000 baht requirement for a retirement visa apply to re-applications, and can the money be spent or withdrawn?

The question concerns the retirement visa, specifically if the 800,000 baht requirement must remain untouched when re-applying, or if funds can be withdrawn. Additionally, the asker is inquiring whether it is better to apply from Thailand or the UK. One commenter notes the need for clarification as there are multiple types of retirement visas and the specific type affects the answer.