Thanks to Armin Grossi for helping me with some pictures!
LP covers 
Boxed 4LP set 
Episodes LP compilation 
Exposed Limited Edition 
Five Miles Out Inside cover
Impressions LP compilation 
Islas (Islands) - Argentina 
Music Wonderland LP compilation 
The Killing Fields 

Cassettes 
QE2 

CD covers 
Amarok 
Crises 
Discovery 
Earth Moving 
Five Miles Out 
Heaven's Open 
Hergest Ridge 
Ommadawn 
The Orchestral Tubular Bells 
QE2
Songs Of Distant Earth 1st Edition
Songs Of Distant Earth 2nd Edition promo
Tubular Bells 
Tubular Bells II 
Tubular Bells III
Voyager 
XXV

Other album-related pictures 
Hergest Ridge promo-sticker 
Ommadawn innersleeve picture
The back of an US Ommadawn promo
Campanas Tubulares label (Argentina) 
The Complete Mike Oldfield sticker 

Albums feat. Mike Oldfield
Bram Tchaikovsky - Girl Of My Dreams 7"
Skids - Iona 7"
Samoa Park - Tubular Affair
Pekka Pohjola - Skuggornas Tjuvstart LP
Pekka Pohjola - (No Title) LP
Various Artists - Musical Phrases LP
Kevin Ayers - June 1, 1974 (Live) CD

 7" covers 
Amiga Quartett 
Blue Peter 
Crime of Passion 
Etude 
Family Man 
Five Miles Out Limited Edition
Five Miles Out Picture disc
Guilty 
In Dulci Jubilo
Innocent 
Islands 
Magic Touch 
Mistake 
Mistake Picture disc
Moonlight Shadow 
Pictures In The Dark 
Pipetune 
Portsmouth 
Shadow On The Wall 
Shine 
The Time Has Come 
To France 
Tricks Of The Light

12" covers 
In High Places 

CD-singles
Hibernaculum
Hibernaculum 2CD
Hibernaculum 1-track CD-promo
Let There Be Light
Sentinel
Tattoo
Women Of Ireland

Misc. pictures 
Postcard with picture and sign 
Postcard from TBII 
NME, Jan. 1975