Hi again,
The valuation records are fairly easy to use, but there are a couple of stages to go through - it took me, a novice in this, two or three hours at the National Archives to find a) the leaseholder living in my house in 1913 and b) the name of the freeholder. I found studying the PRO guide Maps for Family History (author William Foot) useful preparation before my visit. Staff are on hand to help too.
Regards
Rob