Four words, four different acts
Certified, attested, sworn and notarised describe four separate acts done by four different people. Mixing them up is how a file ends up waiting a week for a stamp nobody asked for. The word an office uses in its own letter is the word to trust, and if that letter says a translation must be certified, then a signed accuracy statement is the thing being bought.
Who signs, and what they are claiming
The signer is a named translator, not a company and not a machine. What they claim is narrow and checkable: that the Arabic in front of you says what the English page said, with nothing added and nothing dropped. They date it and put their name to it. That narrowness is a feature, because a claim small enough to be true is worth more than a broad promise.
Everything on the page, not just the sentences
A birth entry or a degree is mostly not prose. It is fields, stamps, reference numbers and a signature block. All of it is carried over: a seal is described where it sits, a handwritten note in the margin is marked as handwritten, and an empty box is shown as empty. A reader in Jordan should be able to lay the two pages side by side and account for every mark.
The bill and the calendar
Money here is arithmetic, not negotiation: £25 for each side of paper as issued, so a two-sided certificate is two. The calendar is 3–5 business days from a clean scan, with 48 hours available at a higher rate. Most delay sits before the writing starts. Where the paper is a civil record, Derby Register Office at Riverside Chambers, Full Street, Derby DE1 3AF issues a clean certified copy, and starting from one of those saves the day otherwise lost to a dim photograph.