** Books, newspaper and stationery retailer WH Smith up more than 4 pct in strong volumes & 2nd top gainer on Stoxx 600 Retail index
** FY total sales rise 1 pct with comparable sales coming in flat; Canaccord Genuity says co "delivered as promised"
** Results follow 8 straight full year beats on results, according to Reuters data
** More than half of daily avg volume traded through in first 1.5 hrs post bell
** Stock had risen 20.36 pct YTD vs c.3 pct gain in broader retail index (RM: firstname.lastname@example.org)