Early seasons (1-14) feature entirely white British casts in conventional roles, faithfully reflecting nostalgic "Englishness" without any progressive ideological influence, diversity mandates, or identity politics, earning consistent 0-1/10 scores for their apolitical, escapist entertainment. Later seasons (15-25) maintain the traditional formula but introduce minor progressive elements post-2011 producer controversy, such as incidental ethnic diversity in guest roles, a few non-white recurring characters (e.g., Dr. Kam Karimore), and rare LGBTQ+ mentions, resulting in slightly higher scores (2-6/10) amid some audience backlash, though these remain non-dominant and plot-subservient, preserving the show's core neutral charm.