I have had many clients come to me from other sites after failing the GATB testing for Special Constable. In my opinion, it's not so much that the test is difficult - it's more that you are required to be very speedy and accurate. In addition, the GATB tests some 'interesting' spatial skills that people really don't use much in everyday life.
The good news is all of those clients who diligently used my teaching materials passed in the end. The other good news is research has shown that you definitely can influence and improve your scoring on these types of tests through practice with material that is similar to the real test. I emphasize the word similar because most test preparation companies out there don't take the time to really lay out questions that match the real test. Instead, they use a bank of questions that are in the right area (for example, math), but not at the right level or type of questions.
If you're interested in taking the GATB, please don't underestimate your preparation materials. If you leave your preparation to chance, you leave your career change to chance as well. Go with the proven winner, Cognitive Results.
We work with serious applicants who really do want to be successful and optimize their journey.