EU Citizen living in London

I am an EU citizen applying for a Chinese visa this week, and came upon this information:

"(3) Proof of legal stay or residence status (applicable to those not applying for the visa in their country of citizenship)

If you are not applying for in the country of your citizenship, you must provide the original and photocopy of your valid visa or certificate of stay, residence, employment or student status of the country where you are currently staying.

"

I am Spanish, and have been residing in London for the last 4 years. I do not have a "certificate of stay" or "permit", as I am allowed to live here through the Schengen agreement.
Will my passport suffice to prove this, or do you know if I need to provide any further information to show that I reside lawfully in the United Kingdom?

Many thanks in advance!