However, they possibly went for the cheapest tender in the end re the digital imaging.
They did not, cost is one consideration on goverment tenders. In the event the scale of the project was underestimated by both. There are various old long threads on the DOVE, EAGLE, MAGPIE project on here c2006-2010. Siemens did them, a synopsis is
https://en.wikipedia.org/wiki/General_Register_Office_for_England_and_Wales . £8.33 million then, after refund from Siemens given that only 50% had been completed (no marriages).
The cheap uption was a recent addition with no adjustment or human cropping of the digital images. Initially the images were only used on paper certs then offered as pdf's.
The GRO's quarterly copies are a combined bound bundle of various sub-districts.The similar Irish ones some pages are vertical and some are slant and so some have the left or right edges of parts of entries cut off. They are not uniform. It was envisiaged there would be human input before sale, legislation at the time only allowed for paper copies so digitisation was for internal efficiencies more than specifically designed for geneologists, and not with a pdf or jpeg service in mind. We are talking 20 years ago. A GRO cert is a legal 'certified copy of an entry' if handwritten or typed, that was what you got for 150 years.
Another part of the project was modern re-indexing from the images, adding mother's maiden surnames back to 1837 and ages at death, which only commenced 1866 & 1911 on the original period (FreeBMD) indexes.
https://www.gov.uk/government/publications/digitisation-of-vital-events-project-costs/expenditure-on-the-digitisation-of-vital-events-project-of-civil-registration-recordI think the whole thing seems to be a shambles
That is an opinion, many have been happy that they only have to spend a third or a quarter of what they previously had to for their ancestor's information. Not that long ago the only option was a paper cert via snail mail, only to find you had ordered the wrong one. As Nick said they do warn it is a possibility and if people want to avoid it then they need to purchase only the pdf's.
https://www.gro.gov.uk/gro/content/certificates/faq.asp