I would suggest that your husband goes to the British consulate / embassy and ask for a certificate of residency.
I assume that they will ask him for quite a few documents, but this must be the easiest and quickest way.

However, they may deliver such certificate after six months residency only, this I do not know.

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My husband and I have applied for residencia and from the application we are to wait 4 weeks then we go back to the authority have finger prints taken wait another four weeks pay the tax and hopfuly receive residencia.

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