Yes. You must attend the BLS Spain visa appointment UK in person for biometric data (photo & fingerprints) when submitting a short-stay Schengen visa application. Schengen visa rules require the applicant’s personal appearance at the visa collection point (BLS Centre) to record biometrics. You cannot send someone else in your place unless a specific exception applies (e.g., minors with consent or special needs), and even then, biometrics must be provided.