Embassy legalisation for use in Armenia
Start with the short answer. Armenia accepts a simpler single-step certification, so the consular chain does not apply to papers headed there. Nobody needs to book, budget for or wait on embassy legalization for Armenia from Coventry. A sheet carrying that one British certificate is already in the shape an Armenian office expects to receive.
That leaves one office in the story instead of three. The FCDO Legalisation Office adds the certificate, and nothing follows it. So the question worth your time is not how many stamps to gather. It is whether the record underneath them is the right record, with the right names and dates on its face.
What Armenia asks for instead
No consular desk stands in this route, so nothing about one is worth planning around. What an Armenian office reads is the sheet itself: the body that issued it, the seal, the names, the dates. Consular legalization for Armenia belongs to a wholly different group of destinations, and paying for it here buys a stamp nobody will read.
The certificate is narrow in what it promises. It confirms the signature, seal or stamp already sitting on the sheet. It does not weigh the contents, judge a translation or repair a spelling. Document legalization for Armenia therefore stands or falls on what you began with, not on how many offices have touched it.
The Coventry → Armenia route step by step
Civil records begin at Coventry Register Office, Cheylesmore Manor House, Manor House Drive, Coventry CV1 2ND. It issues fresh certified copies of birth, marriage and death records, and it is that copy which travels. The certificate you keep at home then stays where it is, whatever the post decides to do with the rest.
Papers drawn up privately open in another way. A contract, a power of attorney or a company resolution is signed in front of a notary or a solicitor, because the certification stage works from a signature it can recognise. Both kinds of sheet then take the same road to Milton Keynes and return by the same post.
Cost and timing for this route
One office means one wait. Standard handling at the FCDO Legalisation Office runs 7–10 business days, and the express route runs 2–3 business days, with post either side of those figures. An official fee applies to each sheet. No second bill arrives from a mission, because no mission has any part in this.
What would change this
Only one thing would put a longer route back on the table, and that is a change in what Armenia itself accepts. Until such a change, embassy attestation for Armenia plays no part, and no Armenian office is holding a file open in the hope of one. Legalize documents for Armenia the short way, then spend the weeks you saved on the record.