Hi Max
What a shock you've had and no doubt a great deal of thinking to do.
After three years of writing I have just published my own personal account of my search for my birth mother, entitled COLEMAN, (Female). I am left without all the answers I need. It is my hope that by reaching a wider audience some information might come to light regarding the mysterious St Margaret's! I too was born there in 1962.
My book also raises issues, that you may or not be aware of, concerning the registration of adopted people in England and Wales and I am currently awaiting a response from my MP relating to this.
We all only have one entry in the birth register, therefore for adopted people we are listed under our birth name. This creates a situation whereby adopted people are left without a complete record of their life and death. i.e. if your future generations tried to trace you there would be no record of your birth relating to the family that you were brought up in and any further family tracing beyond you would be impossible.I believe that adopted people should appear for a second time under their adopted name.
Good luck to you for your continued investigations.