Kim,
Since you do not give an exact address for your relative, I assume you are working from the index entry.  In which case beware, Staines is the registration district and covers a much wider area than just the town/parish of Staines itself.  It includes:
Ashford, Harlington, Harmondsworth, Laleham, Littleton, Cranford, Feltham, Shepperton, Stanwell, Sunbury, Hanworth, and East Bedfont.
Nell