Hello again Stephen
Sorry, forgot to mention: you can rule out the cavalry regiments of the 'Heavy Brigade'. They are the 1st Dragoons (Royals); 2nd Dragoons (Scots Greys); 4th Dragoon Guards (Royal Irish); 5th Dragoon Guards (Princess Charlotte of Wales) and 6th Dragoons (Inniskilling). This came from Roy Dutton's book "Forgotten Heroes: The Charge of the Heavy Brigade".
You will soon have a very long list of "not in regiment ......" !!!
Diane