Yes. A credit check requires the tenant's consent, so let the tenant know before you run one. As the landlord, you are responsible for this.
Tip: Mention it early, for example in the rental ad or when you arrange a viewing: "We run a credit check on applicants through Keyhole." This is common practice and makes the process clear and predictable for everyone.
The consent must be voluntary, specific, informed and unambiguous, as required by the GDPR.