Embassy legalisation for use in Côte d'Ivoire
A paper drawn up in England carries no weight abroad by itself. To legalize documents for Côte d'Ivoire you bolt on proof that the person who signed is real and holds the post claimed. Two separate offices supply that proof, and only the first of them sits inside Britain's reach.
The British office is easy to point at. It has a name, a post box and a published charge. The office at the far end is described by what it does — the mission holding the consular remit for that state — and a description is what you match, not a shopfront you drive to.
Côte d'Ivoire consular requirements
A mission can act for more than one state, and a state can be served by a consulate rather than a full embassy. That is why embassy attestation for Côte d'Ivoire is better treated as a job than as an address. You are asking which desk in Britain is entitled to sign on that state's behalf.
The practical effect is small but real. You cannot fix the last leg to a street and a walk-in slot, and there is no counter where a stamp is handed over while you wait. The file goes to the office that holds the remit, it is marked there, and it comes back. Consular legalization for Côte d'Ivoire is finished at that moment.
The Southampton → Côte d'Ivoire route step by step
The opening move belongs to you: get hold of a version of the paper you can afford to part with. Southampton Register Office at 6a Bugle Street, Southampton SO14 2AJ issues fresh certified copies of birth, marriage and death entries, so a spare can travel while the record in your drawer stays where it is.
Next a solicitor or notary public signs that copy. Then the FCDO Legalisation Office adds the British mark, working by post from PO Box 6255, Milton Keynes MK10 1XX with no counter to visit. The consular stamp comes last. Miss a stage and the desk after it has nothing to look at.
Cost & timing for this route
Budget in two parts. Around £45 goes to the FCDO for the British certificate on each paper you put through. The consular stage carries its own charge, set by the mission rather than by any British office, so an official fee applies there too and the total is not one published number you can quote back to a client.
Allow 7–10 business days for the full run at the ordinary pace, or 2–3 business days if you pay for faster handling. Both figures cover work and post together. A deadline three weeks out is a comfortable job; one three days out is a different problem, and worth pricing before you promise it.
Destination-specific requirements
A request for embassy legalization for Côte d'Ivoire from Southampton is really a request for two marks in a fixed order, ending at a desk named by its role. That is worth knowing early, because the whole job is planned backwards from that desk: whatever it will accept dictates what the British stage has to produce.
So the sensible habit is to settle the last stage in your head before you spend anything on the first. Once you know which mission acts for that state, document legalization for Côte d'Ivoire becomes an ordinary errand with a known shape, a known British price, and a range of dates you can hold a client to.