From Home Office website:
If you have not received your permit 10 working days after the date on your letter from us extending your permission to stay in the UK, you should email
BRPDelivery@homeoffice.gsi.gov.uk. In your email you should state:
your full name;
your date of birth;
your nationality;
your passport number;
your case reference number;
the delivery address for the permit; and
a contact telephone number.
If you do not provide all this information, there may be a delay in answering your query.
You can also send this information by post to:
Freepost RRYX-GLYU-GXHZ,
Returns Unit,
PO Box 163,
Bristol
BS20 1AB
You cannot ask about undelivered permits in person at our public enquiry offices or biometric enrolment centres.
http://www.ukba.homeoffice.gov.uk/visas ... -need-brp/
