Immediately following the tests, you will be given a print out showing your results. You will be given a theory test pass certificate if you pass both parts (multiple choice and hazard perception test). You'll need the certificate when you book and take your practical test. Having passed your theory test you can take your practical test once your driving is to a high enough standard.
Are there any time restrictions?
Yes, your theory test pass certificate is only valid for two years. If you have not passed your driving test within the two year period, you will be required to re-take and pass your theory tests before you can take a driving test.
What should I do next?
Having passed your theory test, you should of course tell your driving instructor. Your instructor will be monitoring your progress in lessons and take into account any desired timescales that you may have discussed, coupled with knowledge of waiting lists, your instructor will be able to advise you when it is appropriate to apply to take your driving test.