What a good image looks like
Flat, square to the lens, lit evenly, and whole. That is the entire brief. A page held in one hand curls, and a curl throws a shadow across the very line a clerk will want to check. Corners matter more than people expect, because a registry number or a print date often lives there. If a scanner is out of reach, a phone on a table above a flat page does the job well.
Spanish is the language that gets read
A certified translation into Spanish in London is required for papers that will be used in Cuba, whatever language they were issued in. An English sheet alone gives a clerk nothing to work from. So the Spanish becomes the working text, and your English page stays beside it, close enough that a name, a date or a certificate number can be traced across the pair in a moment.
Nothing on the page gets skipped
An official Spanish translation in London describes the whole sheet, not only its sentences. A dry embossed seal, a fee stamp, an initial in a margin, a line ruled through an empty box — each is noted in Spanish at the spot where it sits. That is why the image has to show the entire page: anything cropped out simply cannot appear, and a gap in the set is what makes a reader doubt the rest.
Cost, calendar, and the sheet you keep
A certified translation in London for Cuba is £25 a page, counted by printed sides, at 2–3 business days as standard or 24 hours express. Because everything runs from images, the sheet in your drawer never has to move. Where the record is a civil one, a fresh certified copy from Westminster Register Office can stand in for it, and a new print usually scans better than an old one anyway.