While the Commons frequently makes headlines, the Lords provided detailed scrutiny throughout the year. Although the Lords' work involves more than what is said in the chamber, contribution counts provide one measurable indicator of visible parliamentary activity.

So which parties were most active in the Lords in 2025, both in raw volume and activity per member?

Top 10 by contributions per member (Lords, 2025)

  1. Green Party – 299.0 per member

    This represents the highest per-member rate and demonstrates how small groups can achieve substantial per-capita activity.

  2. Reform UK – 90.0 per member

    As a single-member group, this reflects consistent activity by a single peer.

  3. Labour – 76.04 per member

    Labour recorded a high per-member rate for a large group, leading both in total contributions and participation density.

  4. Plaid Cymru – 61.0 per member

    Plaid Cymru recorded high per-capita activity, illustrating how small parties can achieve disproportionate visibility.

  5. Liberal Democrat – 54.14 per member

    A comparatively small group maintaining steady, high output.

  6. Conservative – 37.89 per member

    The per-member rate was below Labour's. With the largest membership base, participation was more unevenly distributed.

  7. UUP – 29.67 per member

    Notable per-peer activity, despite ranking outside the top 10 by total volume.

  8. DUP – 26.67 per member

    Moderate per-member activity, consistent with their modest overall totals.

  9. Crossbench – 20.58 per member

    A lower per-member rate, consistent with a large pool where many contribute occasionally and a smaller number contribute frequently.

  10. Non-affiliated – 19.0 per member

    Lower per-member activity, reflecting varied engagement patterns without formal party structures or designated parliamentary roles.

Top 10 by total contributions (Lords, 2025)

  1. Labour – 16,576 (218 members)
  2. Conservative – 11,103 (293 members)
  3. Liberal Democrat – 4,331 (80 members)
  4. Crossbench – 4,014 (195 members)
  5. Non-affiliated – 969 (51 members)
  6. Green Party – 598 (2 members)
  7. Bishops – 387 (29 members)
  8. DUP – 160 (6 members)
  9. Plaid Cymru – 122 (2 members)
  10. Reform UK – 90 (1 member)

Note: Labour and Labour (Co-op) numbers have been combined.

As always, this is a measure of recorded activity, not impact.

Some of the Lords' real influence happens through committee work, amendments, and specialist expertise that won't be fully captured by raw counts.