This would no doubt be different tomorrow or yesterday or even in the next two minutes but here goes...
1:
Pink Floyd ~ Meddle
2: Pink Floyd ~ Dark Side of the Moon
3: The Enid ~ In The Region of the Summer Stars
4: Siouxsie and the Banshees ~ The Scream
5: Kaleidoscope ~ The Tangering Dream
6: Pain Of Salvation ~ Perfect Element pt1
7: Secret Green ~ The Return of the King
8: Yes ~ Relayer
9: Pain Of Salvation ~ Remedy Lane
10: This Mortal Coil ~ It'll End in Tears
11: Pink Floyd ~ Atom Heart Mother
12: Tangerine Dream ~ Force Majeure
13: Opeth ~ Orchid
14: The Moody Blues ~ Every Good Boy Deserves Favour
15: David Bowie ~ The Man Who Sold The World
16: Genesis ~ The Lamb Lies Down on Broadway
17: The Passage ~ Pindrop
18: Van Der Graaf Generator ~ H to He Who Am The Only One
19: Le Orme ~ Felona e Sorona
20: Mike Oldfield ~ Incantations
21: Paradise Lost ~ Draconian Times
22: Peter Gabriel ~ PG-1
23: David Sylvian ~ Secrets of the Beehive
24: Van Der Graaf Generator ~ Still Life
25: Syd Barrett ~ The Madcap Laughs
26: Pink Floyd ~ Animals
27: Gary Numan ~ Pure
28: Porcupine Tree ~ In Absentia
29: My Dying Bride ~ Turn Loose the Swans
30: Sisters of Mercy ~ Floodlands
31: Talk Talk ~ The Colour of Spring
32: Kevin Ayres ~ Confessions of Dr. Dream & other Stories
33: Savatage ~ Gutter Ballet
34: Season's End ~ The Failing Light
35: Ultravox! ~ Systems of Romance
36: Van Der Graaf Generator ~ The Least We Can Do Is Wave to Each Other
37: The Enid ~ Aerie Faerie Nonsense
38: Savatage ~ Streets
39: Rush ~ A Farewell to Kings
40: Toyah ~ Sheep Farming in Barnet
41: David Bowie ~ Station to Station
42: Savatage ~ Dead Winter Dead
43: John Foxx ~ The Garden
44: Mike Oldfield ~ Tubular Bells
45: Peter Gabriel ~ PG-2
46: Queen ~ Sheer Heart Attack
47: Tangerine Dream ~ Phaedra
48: Anathema ~ The Silent Enigma
49: Opeth ~ My Arms, Your Hearse
50: Kate Bush ~ Lionheart
51: Tony McPhee ~ The Two Sides of T.S. McPhee
52: Opeth ~ Still Life
53: Siouxsie and the Banshees ~ Juju
54: Peter Hammill ~ Sitting Targets
55: The Icicleworks ~ Blind
56: Tori Amos ~ Little Earthquakes
57: Yes ~ Tales from Topographic Oceans
58: The Comsat Angels ~ Waiting for a Miracle
59: Godley and Creme ~ Consequences
60: Heart ~ Dreamboat Annie
61: Supertramp ~ Crime of the Century
62: The Sweet ~ Level Headed
63: Tangerine Dream ~ Rubycon
64: The Dream Acadamy ~ Life in a Northern Town
65: The Fields of the Nephilim ~ Elizium
66: In The Woods
~ Omnio
67: In The Woods
~ HEart of the Ages
68: Opeth ~ Blackwater Park
69: The Cure ~ Seventeen Seconds
70: The Moody Blues ~ To Our Children's Children's Children
71: Kate Bush ~ The Kick Inside
72: Sparks ~ A Woofer in Tweeter's Clothing
73: The Stranglers ~ Rattus Norvegicus
74: Siouxsie and the Banshees ~ A Kiss in the Dreamhouse
75: XTC ~ English Settlement
76: Steve Hacket ~ Voyage of the Acolyte
77: Sparks ~ In Outerspace
78: Danielle Dax ~ Jesus Egg That Wept
79: Amon Duul II ~ Yeti
80: John Cale ~ Paris 1919
81: Sparks ~ Lil' Beethoven
82: Bauhaus ~ The Sky's Gone Out
83: Brian Eno ~ Before and After Science
84: Can ~ Future Days
85: Doctor Feelgood ~ Malpractice
86: Dalek I Love You ~ Compass, Kumpass
87: Van Der Graaf Generator ~ Godbluff
88: Renaissance ~ s/t
89: Danielle Dax ~ Blast the Human Flower
90: Deep Purple ~ The Book of Taliesyn
91: Stray ~ Suicide
92: The Groundhogs ~ Split
93: Brian Eno ~ Taking Tiger Mountain (by Strategy)
94: David Bowie ~ Diamond Dogs
95: The Cure ~ Faith
96: Family ~ Fearless
97: The Cure ~ Disintegration
98: Amon Duul II ~ Tanz der Lemminge
99: Focus ~ In and Out of Focus
100: Modern English ~ Mesh and Lace
101: Hawkwind ~ Hall of the Mountain Grill
102: Cocteau Twins ~ Victorialand
103: Lesley Duncan ~ Earth Mother
104: Michael Hedges ~ Aerial Boundaries
105: Lesley Duncan ~ Sing Children Sing
106: Roger Waters ~ Amused to Death
107: Steve Hillage ~ L
108: Public Image Limited ~ The Flowers of Romance
109: John Cale ~ Music for a New Society
110: Ekseption ~ Ekseption
111: Can ~ Tago Mago
112: Premiata Forneria Marconi ~ The World Became The World
113: Ayeron ~ The Human Equation
114: Porcupine Tree ~ Stupid Dream
115: Porcupine Tree ~ Signify
116: Premiata Forneria Marconi ~ Photos of Ghosts
117: Sally Oldfield ~ Water Bearer
118: Swans ~ Soundtrack for the Blind
119: KLF ~ The White Room
120: Anathema ~ Eternity
121: This Mortal Coil ~ Filigree and Shadow
122: Sarah Brightman ~ Symphony
123: Emperor ~ Anthems to the Welkin at Dusk
124: The Sound ~ Jeopardy
125: Focus ~ III
126: Random Hold ~ Etceteraville
127: Gong ~ You
128: White Noise ~ An Electric Storm
129: The Dear Hunter ~ The Color Spectrum
130: Rick Wakeman ~ Six Wives of Henry VIII
131: Cathedral ~ Endtyme
132: Ulver ~ Themes from William Blake's The Marriage of Heaven and Hell
133: The Stranglers ~ The Gospel According To The Men In Black
134: Family ~ Music in a Doll's House
135: The Icicleworks ~ The Small Price of a Bicycle
136: Mansun ~ Six
137: Ephel Duath ~ The Painter's Palette
138: Muse ~ Showbiz
139: Marillion ~ Brave
140: Anathema ~ Judgement
141: Stackeridge ~ Mr Mick
142: Steeleye Span ~ Now We Are Six
143: The Dear Hunter ~ Act II: The Meaning of, and All Things Regarding Ms. Leading
144: Jeff Beck ~ Jeff Beck's Guitar Shop
145: Jean Jacque Burnell ~ Euroman Cometh
146: Japan ~ Tin Drum
147: Steve Hacket ~ Spectral Mornings
148: Talk Talk ~ Spirit of Eden
149: Wire ~ Chairs Missing
150: Neurosis ~ Through Silver in Blood
151: Sigur Rσs ~ Αgζtis Byrjun
152: Muse ~ Origins of Symmetry
153: Black Sabbath ~ Master of Reality
154: The Groundhogs ~ Who Will Save The World
155: Marianne Faithful ~ Broken English
156: Portishead ~ Dummy
157: Head of David ~ Dustbowl
158: The Gathering ~ How to Measure A Planet
159: Eno, Moebius, Roedelius ~ After the Heat
160: David Sylvian ~ Brilliant Trees
161: Deep Purple ~ Come Taste The Band
162: Roxy Music ~ For Your Pleasure
163: Siouxsie and the Banshees ~ Peepshow
164: Peter Bauman ~ Romance '76
165: Pekka Pohjola ~ Keesojen Lehto
166: Edgar Froese ~ Epsilon in Malaysian Pale
167: The Pop Group ~ For How Much Longer are We Going to Tolerate this Mass Murder
168: Tool ~ Ζnima
169: T Rex ~ The Electric Warrior
170: Mandragora Scream ~ Fairy Tales from Hell's Caves
171: Heart ~ Little Queen
172: Type O Negative ~ October Rust
173: Hatfield and the North ~ The Rotters' Club
174: Elis ~ Griefshire
175: Type O Negative ~ Bloody Kisses
176: Jo'burg Hawk ~ Jo'burg Hawk
177: Jon and Vangelis ~ Friends of Mr. Cairo
178: Sunshine Blind ~ Love the Sky to Death
179: Uriah Heep ~ Demons and Wizards
180: Switchblade Symphony ~ Bread and Jam for Frances
181: Il Balletto di Bronzo ~ Ys
182: Jethro Tull ~ Thick as a Brick
183: Theatre of Tradgedy ~ Velvet Darkness they Fear
184: Bill Nelson ~ Quit Dreaming and Get on the Beam
185: Neil Young ~ Rust Never Sleeps
186: Tim Blake ~ Crystal Machine
187: Genesis ~ From Genesis to Revelation
188: It Bites ~ Eat Me in St. Louis
189: Chrome Hoof ~ Chrome Hoof
190: Moonspell ~ Sin/Pecado
191: Four Tet ~ Rounds
192: Neil Young ~ After The Goldrush
193: Black Tape for a Blue Girl ~ Ashes in the Brittle Air
194: Amber Asylum ~ Frozen in Amber
195: King Crimson ~ Red
196: Faust ~ So Far
197: Spliff ~ Schwarz Auf Weiss
198: Vangelis ~ Heaven and Hell
199: Tuxedomoon ~ Half Mute
200: Gentle Giant ~ Acquiring the Taste
...can't believe I missed off Mansun and Pat Benetar but hey-ho, what's done is done.
/edit: Missing off Mansun has been bugging the hell out of me so list updated to include them.