Theres something very wrong here, and I think (and I hope you can prove me wrong) that you've been conned by this Immigration Lawyer. Why do I say that?
"residential status of a British Citizenship as a non-resident.."
Only applies if your a British Citizen living abroad as a tax exile.
"a first class citizen of this country (UK)"
Utter rubbish, Red Flag 1
" pending my probationary period"
Visas are issued for a fixed time limit, its not probation. Your not on trial here.
"a national identification number"
Red flag 2. Why? We don't have "national identification numbers" in the UK, only passport numbers or National Insurance numbers, unless its the visa reference number?
Where was the application made? Singapore? Manila? (I would assume Manila if your "passport" is available for collection end of July). Where is the lawyer? Philippines? Singapore? Did you provide any proof of your relationship to this lawyer? If so what evidence did you provide? Did your lawyer quote a visa/passport application reference number so you can trace the application status online? Did the Embassy tell you to come to the Embassy to pick up the "Passport" or did your lawyer tell you? Have you had ANY communication with the Embassy, be it letter or phone calls?
Like I said, I hope you can prove me wrong, but a lot of your story does not stack up. Maybe this lawyer has his legal jargon all mixed up, and he's using the wrong words, in which case, he shouldn't be an Immigration Lawyer, if he's not familiar with British Immigration rules and regulations.