By Laura McGuire Last-minute Valentine’s Day flowers are now roughly four per cent more expensive than they were last year, according to inflation data from the Office for National Statistics. On the day of love, train stations and tube stops have been filled with florist stalls giving partners one last chance to woo their significant other before the big day ends. However, the price of a bouquet of roses has shot up around four per cent if you look at Wednesday’s inflation reading. “Outside of the big demand peaks like Valentine’s Day, inflation in our cost base is falling in line with the na…