Posted 10 April 2012 - 03:48 pm
Records of County TF Associations are mostly now held by the relevant County Record Office. If they have them they should be able to tell you whether any nominal rolls are among them: if not, they may be able to suggest another military or local museum which might have them.
The RA Museum at Woolwich, FIREPOWER!, may have something, or again they may know where the rolls are held, if they have survived.
All of these suggestions are rather long shots but asmost such museums and offices now have websites you should be able to contact them by e-mail to ask what they have, and possibly save yourself a fruitless visit.
As you live in London, you might like to look at the actual medal index rolls, which are on microfilm at Kew in class WO329. You should be able to use the MIC info you have to identify a few pages in the roll, and scroll backwards or forwards from there. The rolls are normally in service number order so as you know the relevant number block you should be able to get a rough-cut version of the list of men who served with the battery. Once you have established men's identities with some confidence, including their service numbers, cross-checking with the CWGC "Roll of Honour" database on www.cwgc.org will help you to confirm those who died.
It could be a long, slow job and I wish you well, but at least you should be able to find out fairly quickly whether you are on a wild goose chase or not.