The following examinations are available in the UK.  You can click on the links below to access the technical syllabus of each of them:

Penetration Testing Examinations:
CREST Practitioner Security Analyst
CREST Registered Penetration Tester 
CREST Certified Web Applications Tester
CREST Certified Infrastructure Tester
CREST Certified Wireless Specialist

CBEST / Simulated Target Attack and Response (STAR) Examinations:
CREST Certified Simulated Attack Manager
CREST Certified Simulated Attack Specialist
CREST Practitioner Threat Intelligence Analyst
CREST Registered Threat Intelligence Analyst
CREST Certified Threat Intelligence Manager

Incident Response Examinations:
CREST Practitioner Intrusion Analyst
CREST Registered Intrusion Analyst
CREST Certified Network Intrusion Analyst
CREST Certified Host Intrusion Analyst
CREST Certified Malware Reverse Engineer
CREST Certified Incident Manager

Security Architecture Examination:
CREST Registered Technical Security Architect

Please check the Booking a CREST examination page for how to book your CREST examination.