Are you a patient person? 
Then you can view the complete death index here
http://content.ancestry.co.uk/iexec/?htx=List&dbid=8966&offerid=0%3a7858%3a0
Make sure you view every quarter of every year ...
I've done that numerous times for all the births, marriages and deaths which I can't find in the indexes. You can build up quite a speed after a while
Everyone I've looked for in this way, I've found. Occasionally it can take longer than you might imagine - when (as in a couple of my cases) the relatives were over 90 when they died. Just be methodical.
You start with a known date (for deaths, the latest date you know they were alive) and work forwards.
But remember to keep a note of where you're up to ...
I just have a sheet of paper with all the years down one side, and then I just write in 1, 2, 3, 4 as I check quarter 1, Q2, Q3, and Q4 of each year. I also find it useful to have a column to the left of the year, giving my relative's approximate age in that year - one less place for the eye to look when you spot a possible match.
On Ancestry, it will always open at the first page of the first letter of the surname that you choose, but most of the time you can guess the page where your surname will be and just type that straight in as soon as you can, rather than waiting for the first page to load.
