Porcupine Tree has five people listed as members according to MusicBrainz, with the data retrieved on 2026-10-08. This list reflects the band members as recorded in that database and includes both current and former members, their years of activity, and the albums released during their tenure.
Current Members
- Steven Wilson – not listed, 1987–present
- Richard Barbieri – not listed, 1993–present
- Gavin Harrison – not listed, 2002–present
Former Members
- Chris Maitland – not listed, 1993–2002
- Colin Edwin – not listed, 1993–2010
Original Line-up
- Steven Wilson – not listed, 1987–present
Line-up Timeline
| Member | Role | Years |
|---|---|---|
| Steven Wilson | not listed | 1987–present |
| Chris Maitland | not listed | 1993–2002 |
| Colin Edwin | not listed | 1993–2010 |
| Richard Barbieri | not listed | 1993–present |
| Gavin Harrison | not listed | 2002–present |
Line-ups and Albums
The following details which members were active during each Porcupine Tree studio album release year. The album years and member years are taken directly from MusicBrainz data.
- The Nostalgia Factory (1991): Steven Wilson (1987–present) was in the band. The other members had not joined yet.
- On the Sunday of Life… (1992): Steven Wilson only, as other members join starting 1993.
- Up the Downstair (1993): Steven Wilson, Chris Maitland (1993–2002), Colin Edwin (1993–2010), and Richard Barbieri (1993–present) were all members; Gavin Harrison had not yet joined (2002).
- The Sky Moves Sideways (1994): Steven Wilson, Chris Maitland, Colin Edwin, and Richard Barbieri were members.
- Signify (1996): Same line-up as above: Steven Wilson, Chris Maitland, Colin Edwin, and Richard Barbieri.
- Stupid Dream (1999): Steven Wilson, Chris Maitland, Colin Edwin, and Richard Barbieri.
- Lightbulb Sun (2000): Steven Wilson, Chris Maitland, Colin Edwin, and Richard Barbieri.
- In Absentia (2002): Steven Wilson, Colin Edwin, Richard Barbieri, and Gavin Harrison (joined 2002). Chris Maitland left in 2002, so depending on exact timing, he may or may not have been involved this year.
- Deadwing (2005): Steven Wilson, Colin Edwin, Richard Barbieri, and Gavin Harrison.
- Fear of a Blank Planet (2007): Steven Wilson, Colin Edwin, Richard Barbieri, and Gavin Harrison.
- The Incident (2009): Steven Wilson, Colin Edwin, Richard Barbieri, and Gavin Harrison.
- Closure / Continuation (2022): Steven Wilson, Richard Barbieri, and Gavin Harrison (Colin Edwin had left in 2010).
How This List Was Compiled
This list is based on the ‘member of band’ relations recorded on MusicBrainz for Porcupine Tree as of the retrieval date 2026-10-08. Only individuals with a direct member relation to the band are included. Touring musicians, session players, collaborators, or other contributors not listed as official members in MusicBrainz are excluded from this list. The roles and years have been reproduced exactly as recorded in the database, with no additions or assumptions beyond the available data.
Frequently Asked Questions
- How many members are listed for Porcupine Tree?
- There are five members listed in MusicBrainz for Porcupine Tree.
- Who is listed without an end date?
- Steven Wilson, Richard Barbieri, and Gavin Harrison are listed without an end date, indicating they are current members.
- Who is marked as an original member?
- Only Steven Wilson is marked as an original member in the MusicBrainz data.
- Where does this data come from?
- The data comes from MusicBrainz, retrieved on 2026-10-08, and reflects their official member listings.
Final Thoughts
Porcupine Tree’s membership has evolved over the years, with a core group of members contributing to its sound across various albums. This list provides a clear view of who was in the band at different points in time based on verified data.
For any further details beyond official membership, such as touring or session musicians, MusicBrainz does not list those contributors, so they are not included here.
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