P rince Harry’s explosive memoir Spare is finally on sale on Tuesday after a series of incendiary interviews given by the Duke in the lead-up to its release. The hotly anticipated autobiography was due to be released globally at midnight on Monday, UK time. Bookshops extended their opening hours in expectation of a midnight rush to purchase the book. With demand expected to be high, WHSmith, the retailer, said it was extending opening hours at a number of its shops to allow readers to pick up an early copy of the 417-page book. Around 10 shops across the country, including...