Approval
You mixed up licence and approval.
CAA issues AMELicence. Company issues approval, not licence.
CAA polices the UK CAA Part 147 Organisations by way of auditing etc.
Other EU EASA licensing authorities do the same for other EU approved organisations.
An organisation may issue an approval to any personnel she (QA) deems qualified to sign off her fleet of aircraft. CAA will audit the company to ensure she is in full compliant with the regulations.
UK CAA has authority over her own CAA approved organisations, and not Malaysian CAAs’ or An African CAAs’. CAA can only vet her approved Schools (fee payable, not free), and not MAS Training School or Saudi Aircraft School.
To approve your course(s) would set a precedent for an influx of applicants as far as from Laos. Once a precedent is set, it becomes a rule. Then CAA would find it hard to turn down any unapproved courses from any countries. That is why CAA has the rules as a bible to adhere to.
It is not CAA that fails you, It is your previous employers and their CAAs not having an agreement with UK CAA. I believe Brunei courses are recognised by UK CAA.
I have friends having the same predicaments as you. I had worksheets returned for lack of elaborated work tasks and coverage after 6 months of experience. I felt resentful considering that other EU personnel could have an EU EASA AMEL type rating after a month of work experience.
CAA would stick to her rules to keep her integrity. Her unique and unbiased integrity make UK CAA the best demanded AMEL all over the world.
I doubt if UK CAA has any recognition with US NAA or FAA AMEL. A & P is not recognised by CAA here although N registered aircraft can land and certified by A & P in UK.
Remember that if you follow the rule, no one can blame you although they hate you.
It is the same as many driving licences (except international) or University degrees from other countries not recognised in UK even though many are no doubt better drivers and knowledgeable than British.