You cannot use an Identity Check instead of a DBS ID Check.
You may request both through the uCheck system, but they are different processes with different rules and purposes.
Use this article to understand:
What a DBS ID Check is
How you can complete a DBS ID Check
What the electronic Identity Check does
Why an Identity Check does not replace a DBS ID Check
Difference Between an Identity Check and a DBS ID Check
You can request both checks in the uCheck online system:
A DBS Check
An electronic Identity Check
This lets you manage multiple pre-employment screening steps in one place.
However, you must treat them as separate processes:
A DBS ID Check is part of the DBS criminal record checking process and must follow DBS rules.
An Identity Check (electronic identity verification) is an additional tool for confirming identity and reducing risk, but it does not meet DBS ID requirements.
Key rule:
You cannot use an Identity Check as a substitute for a DBS ID Check.