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A male runner smiles as he holds his Marathon medal.

TCS London Marathon 2026

Be a part of our 50th anniversary team at the iconic TCS London Marathon 2026! Join #TeamRetinaUK and soak up the incredible atmosphere as you run from Blackheath to The Mall finish line!

An illustration of two parents and a child being supported on a hand

Genetic counselling

Genetic counsellors are specially trained healthcare professionals with extensive scientific knowledge who spend time talking to families living with inherited conditions.