Using numerous scientific methods, photographer Alex Colley explores his relationship with his twin

A tale of twins: A changing relationship as told through photography

Alex Lockett explores familial dynamics and experiences in his narrative-driven photography

Ashley Markle on rebuilding her relationship with her father through photography

Aleia and Alex: a surreally stylish pair of photographers

Photographer Carl Oliver Ander examines “the false relationship to reality that the medium has”

Photographer Neil Bedford ties two subjects together through an affinity for their surroundings

Taylor Wessing Portrait Prize-nominated photographs of twins

Oil, gas and fire: Chloe Dewe Mathews photographs human relationships to the elements

Alexander Coggin photographs a topsy-turvy year through the children in his life

Photographer Daniel Stier reveals the bizarre world of scientific research

The complex and unique relationship of sisterhood as captured by Sophie Harris-Taylor

Sophie Harris-Taylor shares anecdotes and insights from her photo series, Sisters