When, one day, the big book of Richard Curtis is written, perhaps this will be known as his high concept era. Remember when plots were as simple as literally four weddings and one funeral? No longer. Since those bygone basic days, a dabble in Doctor Who has given way to linearity bending romcom About Time and now Yesterday, which practically science fiction in its exploration of a world without the Beatles. That said, sci-fi is rarely this cute, cuddly, warm and winsome. Nor so lacking in science. Regardless, Curtis’ way with quaint mannerism remains strong and his ear for comedy still tickles all the right bones.