Send the sheet that was asked for, and no more
Ordering a certified translation of a Medical Certificate in Manchester is a small job when it is scoped properly. One dated sheet, signed by the clinician who issued it, is normally the whole of what a receiving office wanted. People often send a folder instead, partly out of caution. It costs more on the page rate and it hands over health detail nobody requested.
Who translates it, and what they sign
The work is done by an ITI/CIOL-qualified certified translator, and the certification on record is the certified form UK bodies accept, UKVI and GRO among them. The translator signs a short statement of accuracy naming your source and its page count. A certified translation of a Medical Certificate in United Kingdom terms rests on that signature, not on any court appointment.
What a page costs, and how long it takes
The rate is ~£25 / page and the standard wait is 2–3 business days, with express at 24 hours. Since a certificate is usually one sheet, the total tends to be modest. The saving comes from restraint rather than from any discount: every extra page you add is another page charged, and none of it makes the file stronger.
Where a translated Medical Certificate is wanted
These sheets travel with visa files, insurance claims, school and sports registrations, employment files and applications for time off. Each of those readers wants proof of one thing on one date. That is the strongest argument for keeping the set narrow, because an official translation of a Medical Certificate in Manchester answers the question asked and stops there.
What actually gets carried across
Everything printed on the sheet moves over: the heading, the date, the clinician's printed name, any reference number and the wording of a stamp. Handwriting is transcribed as written rather than tidied up. Manchester Register Office at Heron House, 47 Lloyd Street, Manchester M2 5LE issues certified copies of birth, marriage and death entries, but a medical certificate is not one of those, so the sheet you hold is the source.