I feel like a kid handing in his homework at the last minute, so apologies if any of this has already been corrected:
C&C MUSIC FACTORY - David Cole d. 24-Jan-95
CAGE AGAINST THE MACHINE - A pedant might argue that the original 4:33 isn't exactly silence, but the sound of musicians not playing. This possibly is a subtlety lost in this version though.
ALI CAMPBELL - Only worked with Robin Campbell in UB40 - Duncan joined as a replacement for Ali.
GLEN CAMPBELL - X-ref Rikki & Daz to Barndance Boys, Cuban Boys etc?
CAPPELLA - X-ref Anticappella & 49ers
TONY CAPSTICK - 4-Apr-44 - 23-Oct-03
CARDIGANS - X-ref to A Camp and Nina Persson's guest credits
CARMEL - spelling of "fronted"
JUNIOR CARTIER - X-ref to Monkey Mafia
ED CASE - Is only a Producer
MAMA CASS - spelling of "member"
CAST OF CASUALTY - x-ref to Rebecca Wheatley who sings lead on this and had a solo hit
CA$HFLOW - Officially spelt with the Dollar sign $
CHAIRMEN OF THE BOARD - General Johnson's real name is Norman
Their 1971 hit is called 'Chairman Of The Board'
'Loverboy' is credited as "Chairmen Of The Board featuring General Johnson" even though he's already in the band
CHARLATANS - Original guitarist is more often known as Jon Baker (I only found out recently that he was ever called John Day, and it's always Baker on record covers)
Tony Rogers replaced ROB Collins (d. 22-Jul-96) who was unrelated to Mark Collins
Jon Brooks d. 13 August 2013
Some sources call 'Over Rising' an EP, and 'Tremelo Song' not one as it's a multi-format single.
1991 hit's full title is 'Me. In Time' with the full stop in the middle
Full title of their last hit is 'You're So Pretty, We're So Pretty'
CHER - was also married to Duane Allman [Allman Brothers] for ten days.
CHIC - Bernard Edwards d. 18 Apr 96, Tony Thompson d. 12 Nov 2003
Tony Thompson was also a member of Power Station
CHICKS ON SPEED - Spelling of "International"
CHILD - Keith Atack was/is married to Kate Robbins (Wikipedia says "separated"). Their daughter Emily Atack is apparently a famous actress.
CHUCKS - Since Ivor Raymonde is mentioned, he is the father of Simon Raymonde from Cocteau Twins
CHUMBAWAMBA - Spelling of 'Timebomb'
ERIC CLAPTON - Also had album chart success with John Mayall's Bluesbreakers if that counts?
1985 hit title is 'Forever Man' - his hit in 2000 is obviously a reworking of the same song
Dave Clark 5 - Is there a better way to represent the two different songs called 'Everybody Knows'?
CLASH Topper Headon only appears on tracks from 'Complete Control' - 'Straight To Hell' (and reissues). He later went solo without chart success
Mick Jones left before 'This is England', he should be X-ref to BAD and Carbon/Silicon
Joe Strummer 21-Aug-52 to 22-Dec-02 his real name was John Mellor and he was born in Turkey. he also charted solo and with his backing group The Mescaleros
CLEA - Their last hit was as a trio
CLIENT - Kate Holmes was also a member of Technique. She married Alan McGee of Creation Records fame
COBRA STARSHIP - Some sources credit Leighton Meester on 'Good Girls Go Bad'
COCKNEY REBEL - 'Make Me Smile' 2005 is a re-recording, but its existence meant that downloads of the original could appear in the chart in 2006.
COCTEAU TWINS - 'Aikea-Guinea' is hyphenated
Spelling of 'Tiny Dynamine' which is an EP: Pink Orange Red, Ribbed And Veined, Plain Tiger, Sultitan Itan
Title of 'Echoes In A Shallow Bay' also an EP: Great Spangled Fritillary, Melonella, Pale Clouded White, Eggs and Their Shells
Title of 'Love's Easy Tears'
'Twinlights' EP: Golden Vein, Half-Gifts, Pink Orange Red, Rilkean Heart
'Otherness' EP: Cherry-Coloured Funk, Feet Like Fins, Seekers Who Are Lovers, Violane
X-Ref to This Mortal Coil?
COLA BOY - Was a pseudonym for Pete Wiggs and Bob Stanley of Saint Etienne with Janey Lee Grace (and Andrew Midgely?). JLG is now a co-host on Steve Wright's radio show
LLOYD COLE AND THE COMMOTIONS - Lawrence Donegan was also in the Bluebells
COLLECTIVE - X-ref Gary Barlow?
COLOURSOUND - hit is by a production due unrelated to the Mike Peters-fronted act
SHAWN COLVIN - Title of ' Every Little Thing He Does Is Magic' though of course this is a version of the Police song
BILLY CONNOLLY - married to Pamela Stevenson, who had album chart hits as part of Not The Nine O'Clock News
was in the Humblebums with Gerry Rafferty before they were famous
COOPER TEMPLE CLAUSE- Didz Hammond was later in Dirty Pretty Things
CORAL - Paul Duffy so good you've named him twice?
ELVIS COSTELLO - Sleeve & chart credits seem to vary a lot during the Attractions era.
Some sources credit New Amsterdam as an EP
Full title of his last hit is 'Tear Off Your Own Head (It's A Doll Revolution)'
DEBORAH COX Spelling of 'Nobody's'
GRAHAM COXON is British (born Germany)
CRASH TEST DUMMIES - Their last hit is credited to "Crash Test Dummies featuring Ellen Reid" even though she was a regular band member, presumably because she sings lead on that track
Billy CRAWFORD Spelling of Philippines?
CREATURES real names Susan Dillon & Peter Clark - they were also married during the duo's career but I don't think they still are
CRIBS - Johnny Marr was also a member but not at the time of their hits, so I understand that might not count
CROWDED HOUSE - Paul Hester 8 Jan 1959 - 26 Mar 2005. Neil Finn and Nick Seymour are the only constant members
Both Finns have charted solo and as a duo
CRUSADERS - Wilton Felder has also charted solo (with guest vocalists)
CRUSH - Spelling of Byker Grooove! [did I really admit knowing that?]
CUBAN HEELS - Spelling of "apparently"
CUD Oh No Won't Do EP tracks are: Oh No Won't Do, Ariel, Profession, The Price Of Love
CURVE Blackerthreetracker had a second CD format, 'Missing Link' is the only song on both
CYBERSONIK - Richie Hawtin is Canadian (but UK born)
CYPRESS - Their second hit is sometimes listed as 'When the Sh.. Goes Down' [the radio edit is "when the ship goes down"]