Glossary entry (derived from question below)
Spanish term or phrase:
a quienes se ha recibido declaración con las garantías procesales
English translation:
from whom there has been received a statement with guarantees of a fair trial
Spanish term
United Kingdom
The highest professional standards
Native in: English
Works in: Spanish to English, French to English
a quienes se ha recibido declaración con las garantías procesales
El presente procedimiento se está siguiendo contra R y K como imputado/a/s, a quien/es se ha recibido declaración con las garantías procesales correspondientes y a quien/es se le/s atribuye la comisión de delito/s de V.DOMÉSTICA Y DE GÉNERO.LESIONES/MALTRATO FAMILIAR que aparece/n debidamente descrito/sen el atestado que ha dado origen a estas actuaciones.
I am unsure whether the accused parties gave or received the statement, and thus whether the garantias are due process or some form of bond.
Proposed translations
Austria
Retd.T&I, Barrister & Austro-Advokat
Native in: English (Variants: Scottish, British) 
Works in: Spanish to English, English to Spanish, French to English, and 5 more.
from whom /there/ has been recvd. a statement made u.c. with guarantees of a fair trial
Fair trial in the UK and due process in the US,
Statment made in what might have been something like an 'interview under police caution' > u.c. - under caution in the UK.
United States
PhD in Translation Studies
Native in: English (Variant: US) 
Works in: Spanish to English, English to Spanish
from whom a statement has been received in accordance/compliance with due process guarantees
And without a doubt, I would say that the proper preposition here is 'from' (i.e., 'from whom ... declaration is received/taken').
39th session of the Human Rights Council: Opening
Sep 10, 2018 - ... be encouraged to ensure that the review of all cases is transparent, **with due process guarantees** such as effective legal representation.
https://reliefweb.int/report/world/39th-session-human-rights...
Reviewing Agency Action for Inconsistency with Prior ... - Corecore.ac.uk
will force the agencies to **comply with due process guarantees** in deter- mining whether an entitlement is due. 10. 2. See id. § 701(a)(2) (precluding from review ...
by HJ Krent - 1997 - Cited by 59 - Related articles
https://core.ac.uk/reader/217432404
Advanced Research Report - Edge Hill Universitywww.edgehill.ac.uk › Report-Administrative-DetentionPDF
Apr 23, 2018 - In place of a conventional process of prosecution for a criminal ... **“complies with due process guarantees** and rights under the Convention”.421.
https://www.edgehill.ac.uk/law/files/2019/10/Report-Administ...
United Kingdom
experienced and well qualified linguist
Native in: English (Variant: UK)
Works in: Spanish to English, English, Spanish, and 3 more.
to whom a declaration with procedural guarantees has been received
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Note added at 2 days 15 hrs (2020-07-02 23:25:41 GMT)
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I understood that the person received written notice of legal proceedings (procedural guarantees) which were addressed to him or her.
El presente procedimiento se está siguiendo como imputado, a quien se ha recibido declaración con las garantías procesales correspondientes y a quien se le contribuye la comisión de delito (maltrato familiar) que aparece debidamente descrito el atesta
The present process is following as accused to whom a declaration of corresponding procedural guarantee has been received and to whom the commissions attributed crime (domestic abuse) with a duly described statement which has originated new updated info
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