I was wrong ......
 

......as I often am about these things in presuming g/grandmother was the
Harriet Headland who died 1915 in Uxbridge. The family had strong connections to Uxbridge & the age was right, but now records are more accessible I've been doing some checking & find the lady in question is not after all my Harriet but the widow of William Headland, a Naval Quartermaster, whereas g/grandfather was Henry William Headland, silversmith.
My Harriet was b 1837 Clerkenwell, m Henry William 1855 & was widowed in 1886.From 1860s she was living in Hackney
Informer on Uxbridge Harriet's death cert is daughter Harriet E. Warwick, not a name I've ever come across before, & I haven't yet checked up on naval William but I'm pretty sure he will be one of mine with the Uxbridge connection.
However, I can't find the death record for my Harriet & though I don't think she remarried I've checked & can't find any record of one.
I'm probably missing something really obvious, but I've been looking at this for a few days now & am ready to admit my inadequacies.

The one whose death you have found is in Uxbridge on the 1911 census with the Warwick family and her birthplace is Tenterden, Kent and her daughter Harriet E Warwick was born in Aberdeen about 1868, just to confirm it definitely isn't your Harriet.

Is your Harriet last seen on the 1891 census in Hackney, Vita, or have you found her after that? (Sorry, I don't think I have time to reread all the previous threads about her!)

And have you previously ruled out the death of Harriet Headlam in Hackney Oct-Dec 1900, age 65?

Thanks,Kite - Tenterden Harriet definitely not mine.
Yes to your next question & no to the second.

There is a death for a Harriet Headlam, b 1835, died Dec Q 1900 in Hackney. Can't see anything else for someone of that name in that area, so might be your Harriet with a mangled name. Might be worth splashing out the couple of pounds for a copy of the DC.

Cross posted with Kiterunner!

Thanks Crawfie - tried,but I got 'No matches found!'

That's funny. It must be mistranscribed somehow, because other death records on that same page are coming up, but I can't figure out how to find it. I've tried all the letters of the alphabet replacing the initial H on the surname, and left the given name out altogether, and still not got it.

D'oh - as soon as I had posted that, I tried another variation and it came back with Headland as the surname!!! Try that!

Thanks, Kite - will do.