Heads up those applying for a Non Immigrant Multiple Entry B visa in London and anywhere using E visa.
They are now no longer issuing the Multiple entry B for any reason other than as below
Non-Immigrant Type B (Travelling to Thailand for business purposes e.g. meeting, exhibition - single and multiple entries)
You can no longer get a ME non b for any reason whatsoever to do with 'working' in Thailand in London so don't even bother attempting to apply.
TLDR : Answer Summary
Recent updates indicate that applicants for a Non Immigrant Multiple Entry B visa in London can only obtain it for specific business purposes, such as meetings and exhibitions. The issuance of multiple entry visas for working-related reasons is no longer permitted.