We arrived and we were taken as a group through the staff entrance and into the studio tour where they were setting up one of the new additions, The Harp from Chamber of Secrets, which is rigged to play when someone operates the buttons. In the middle of the tour they have a table set up, which you can see in the pictures, and here two of the staff members demonstrated to us the two techniques they used in the films to create troll snot, and also slime.

We got the chance to be hands on and mix the ingredients together which is what visitors will be able to do during this period. They will also get the chance to make unicorn blood as seen in the films, but for some reason they didn't have it available to show or demonstrate to us. Next up we had the privilege of going beyond the barriers and stepping onto the potions classroom set, and we got to look at everything in close detail, ranging from the the hundreds of vials including those with shrunken heads, to the details in the potion making textbooks, unfortunately we were not allowed to take pictures, but one of the studio staff was so I'm not sure where those will end up.

And that just about concluded the preview, we were then taken around and were able to see the studio tour at our own leisure. Some of the additional Halloween things visitors will notice will be in the great hall, where they have the costume of Professor Quirrell, and also all the costumes of the Hogwarts Ghosts on display. The tables are also partly decorated with pumpkins and festive food and treats.