You will find details on the logistics and timings of examinations in the UK in the document linked below.  This includes

•  Examinations delivered in the UK
•  Location details of the Examination Centre, including parking and other information
•  The requirements for taking a CREST examination
•  Examination timings

Logistics and Timings for Examinations in the Slough Examination Centre:
Slough Examination Centre logistics and timings  (PDF)

Logistics and Timings for alternative locations in UK
Alternative Venues logistics and timings (PDF)

Sample Electronic Candidate Worksheet (for testing form-fillable functionality)
Sample Electronic Candidate Worksheet