Send a recorded delivery letter online
Royal Mail Signed For 1st Class - the modern name for 'recorded delivery'. Next working day, signed on receipt, with full delivery confirmation.
Royal Mail Signed For 1st Class - what most people still call 'recorded delivery' - is the standard choice for letters where you need proof that someone actually received your post. It's used for tenancy notices, formal complaints, legal correspondence, and any letter where the receiving end might later dispute receipt.