Wedding Invites Spanish Wording What To Wear In This Wedding?

What to wear in this wedding? - wedding invites spanish wording

Hello everyone, I am a Spanish girl, and I was invited to a wedding in London in a few days. I know how people here dress in my country, but I really do not know whether the British people share the same morals. I would be delighted if I warmly welcome you to the kind of clothes they should wear spikes are advised likewise. Thank you very much.