Did mine this year and passed and it wasn't as bad as you think its going to be.
The examiner was really helpful and is pretty much giving you the answers if you listen to them emphasize on words if you get stuck.
I had to do a hive inspection identifying aspects of the colony and brood etc. build a frame from scratch, then answer some questions.
Just talk to yourself about what you are doing and why on the hive inspection and what you are looking for and this will cover what he needs.
I did have to collect bees to send off for a sample (practice) but we had a tip to shake off some bees into an old takeaway container (in my pocket), then tip them into a matchbox. It was much easier than trying to get them into a small box.
Make sure your smoker is lit before starting and it stays lit until the end.
There was questions on diseases after the inspection which were OK and I managed them.
The one that got me was how to test if the hive is queenless.
A basic question but my mind went blank and I don't know how many times the examiner mentioned "brood" to me to encourage the answer from me but I just didn't say take young brood from another colony to see if they will raise QC's.
Its like your driving test and the questions you get wrong, you will never forget.
My examiner explained to me where I was struggling afterwards and I was kicking myself because we'd gone through this at the local club.
A nice guy and keen to talk afterwards.
At the end of the day, you are showing commitment doing the exam and the BBKA want people to enjoy the hobby.
Good luck, you'll be fine.