Well, not quite, but my second birth certificate has arrived.Unlike the first one, I bought this certificate online from here, the official UK government website.
If you know your GRO index reference (look it up) then it is especially good value (£7) but, even if you don't, it's cheaper than the other online services. Most other online services charge between seventeen and twenty-one pounds, yet this site will find a certificate without a GRO thingy for £10.
I now have two certified birth certificates, just in case one gets lost during our process.
