Héctor Cabrera Bermejo

Good day, I am a UK resident self employed. I have a contract of 4 weeks with a UK agent to provide my services to a European client in Europe. To clarify, my signed contract is with the UK agent and I will be relocated temporarily to Europe to provide the service. When doing the self assessment do I consider this as normal income (as my contract is with the UK agent) or foreign (as the work is carried out in Europe)? Thank you.