SF Masterworks is a series of science fiction novel reprints published by UK-based company Orion Publishing Group, a subsidiary of Hachette UK.
This is primarily the original paperback list published between 1999 - 2007, mainly because they are the ones I (mostly) physically have.
| #1 |  The Forever War
| 3.96 |
| #2 |  I Am Legend
| 3.92 |
| #3 |  Cities in Flight
| 3.5 |
| #4 |  Do Androids Dream of Electric Sheep?
| 3.94 |
| #5 |  The Stars My Destination
| 3.82 |
| #6 |  Babel-17
| 3.49 |
| #7 |  Lord of Light
| 3.7 |
| #8 |  The Fifth Head of Cerberus
| 4.08 |
| #9 |  Gateway
| 3.87 |
| #10 |  The Rediscovery of Man
| 2.67 |
| #11 |  Last and First Men
| 3.67 |
| #12 |  Earth Abides
| 4.25 |
| #13 |  Martian Time-Slip
| 3.74 |
| #14 |  The Demolished Man
| 3.6 |
| #15 |  Stand on Zanzibar
| 3.82 |
| #16 |  The Dispossessed
| 4.18 |
| #17 |  The Drowned World
| 3.38 |
| #18 |  The Sirens of Titan
| 3.99 |
| #19 |  Emphyrio
| 3.5 |
| #20 |  A Scanner Darkly
| 3.77 |
| #21 |  Star Maker
| 3.76 |
| #22 |  Behold the Man
| 3.9 |
| #23 |  The Book of Skulls
| 3.25 |
| #24 |  The Time Machine
| 3.68 |
| #25 |  The War of the Worlds
| 3.73 |
| #26 |  Flowers for Algernon
| 4.27 |
| #27 |  Ubik
| 3.99 |
| #28 |  Timescape
| 3.2 |
| #29 |  More Than Human
| 3.67 |
| #30 |  Man Plus (Man Plus #1)
| 3.8 |
| #31 |  A Case of Conscience
| 3.1 |
| #32 |  The Centauri Device
| 1.5 |
| #33 |  Dr. Bloodmoney
| 3.81 |
| #34 |  Non-Stop
| 3.32 |
| #35 |  The Fountains of Paradise
| 3.66 |
| #36 |  Pavane
| 3.38 |
| #37 |  Now Wait for Last Year
| 3.73 |
| #38 |  Nova
| 3.48 |
| #39 |  The First Men in the Moon
| 3.53 |
| #40 |  The City and the Stars
| 3.75 |
| #41 |  Blood Music
| 3.97 |
| #42 |  Jem
| 3.75 |
| #43 |  Bring the Jubilee
| 2.4 |
| #44 |  Valis
| 4.05 |
| #45 |  The Lathe of Heaven
| 4.06 |
| #46 |  The Complete Roderick
| 3 |
| #47 |  Flow My Tears, the Policeman Said
| 3.79 |
| #48 |  The Invisible Man
| 3.5 |
| #49 |  Grass
| 3.8 |
| #50 |  A Fall of Moondust
| 3.7 |
| #51 |  Eon
| 3.68 |
| #52 |  The Shrinking Man
| 3.79 |
| #53 |  The Three Stigmata of Palmer Eldritch
| 3.69 |
| #54 |  The Dancers at the End of Time (Dancers at the End of Time, #1-3)
| 3.57 |
| #55 |  The Space Merchants
| 3.43 |
| #56 |  Time Out of Joint
| 3.96 |
| #57 |  Downward to the Earth
| 4.23 |
| #58 |  The Simulacra
| 3.5 |
| #59 |  The Penultimate Truth
| 3.63 |
| #60 |  Dying Inside
| 3.77 |
| #61 |  Ringworld
| 3.66 |
| #62 |  The Child Garden
| 0 |
| #63 |  Mission of Gravity
| 3.86 |
| #64 |  A Maze of Death
| 3.73 |
| #65 |  Tau Zero
| 3.62 |
| #66 |  Rendezvous with Rama
| 3.92 |
| #67 |  Life during wartime
| 2.33 |
| #68 |  Where Late The Sweet Birds Sang
| 3.44 |
| #69 |  Roadside Picnic
| 3.98 |
| #70 |  Dark benediction
| 3.75 |
| #71 |  Mockingbird
| 4 |