No, it is not possible to take STEP 2020 if you do not hold a university offer asking you to take STEP 2 or STEP 3.
Due to the Coronavirus pandemic STEP 1 will not be administered in 2020.
You can find more information about he effect of COVID-19 on STEP 2020 in the article here.
Can I register for STEP without a UCAS ID?
No, only candidates who have submitted a UCAS application and have received conditional offers from their university can take STEP 2 or STEP 3 in 2020.
Is there another way to practice for the test?
Yes, every year we publish the STEP papers on our website here. You can do the tests in an exam environment and then compare your answers to the answer key.