Apostille vs. Embassy legalisation for Peru
You need the right stamp on a British paper before the authorities in Peru will accept it as valid. For Peru, the stamp is called an apostille. An apostille for Peru is put on the paper by The Legalisation Office in Milton Keynes, not by the Peruvian embassy in London. The single stamp means Peru will trust the paper is genuine without extra checks, as long as it comes with the apostille. This saves time and extra trips between offices.
Peru's Hague status & what it means
Peru signed up to the Hague Convention in 2010, which means they officially accept apostilles from the UK without further checks. The fact that Britain already follows the same treaty makes everything simpler: no embassy legalisation step is needed. Your document must get the apostille stamp before you use it in Peru. This apostille from United Kingdom to Peru will be checked by Peruvian officials to confirm the signature on your paper comes from a British public body they trust. If your paper is in English, that is usually fine, but some offices may ask for a sworn Spanish version.
The Brighton → Peru route step by step
Start by gathering your original paper if it is something like a birth certificate. For documents issued in Brighton, Brighton & Hove Register Office at Bartholomew Square can provide a fresh certified copy if you want to keep your original safe at home. This new copy is what will be stamped with the apostille. You send the copy to The Legalisation Office in Milton Keynes by post. If it is a document they can verify, they will attach the apostille and return it to you by courier. Once you have the apostille on your paper, it is ready for use in Peru. There is no need to go to the Peruvian consulate unless they specifically ask for a translation.
Destination-specific requirements
Peruvian authorities may request a sworn translation into Spanish for the document legalisation for Peru to be complete. The translation should be done after the apostille is in place so it includes the stamp. Some public bodies in Peru have their own forms about how papers should be submitted. For example, if you need to show proof of a single status, you may also need a certificate of no impediment stamped alongside your birth record. The apostille requirements for Peru do not set an expiration date, but it is wise to check how old a paper the office there will accept.