An affidavit is a written statement made voluntarily under oath or affirmation by an affiant or deponent, administered by a person legally authorised to do so.Our Next Day UK Apostille Service provides official legalisation of affidavits through the FCDO apostille service for international use. Category: Personal documents Can I Legalise?: Your affidavit can be legalised. Acceptable Formats for Legalisation: FCDO will accept the document in the following formats: Your original affidavit signed by a UK solicitor or notary A photocopy or printout of your affidavit Requires Solicitor/Notary Certification?: Yes, Your affidavit must be certified by a solicitor or notary public in the UK. Requires Submission as Originals?: No. Important Notes: Certification in UK with notary seal if applicable. Common Use: Court cases, immigration, or legal declarations abroad. Requires Embassy Attestation?: Yes, for non-Hague countries (e.g., UAE, Qatar).