Rooms 62 and 63 present the bulk of the British Museum's collection of Egyptian mummies. These rooms include: 

a side-by-side comparison of two skulls. The one on the left has not had its brain removed. The one on the right has had its brain removed by mummymakers who broke through the ethmoid bone. The darker area near the back of the nasal cavity shows where the bone was broken...now you can see all the way up into the inside of the skull.

The (female) mummy of Katebet (18th Dynasty), still wrapped but with a beautiful gilded mummy mask complete with a wig and pierced earrings. Her own braided hair was displayed nearby as well. It was ready for use in a wig or as extensions.

The mummy of Kleopatra (Greek Period), not the queen but a 17-year-old girl. If you happened to see this mummy in the old displays, it looked rather plain. Now, Kleopatra has been cleaned and stored. And her delicate, beautifully-painted shroud is on display along with her coffins. You can easily tell that (1) her parents loved her very much and (2) they also were quite wealthy.

There are also many mummies of cats and other animals, to give you a broader view of Egyptian mummification. To the left are two quite elaborately wrapped cat mummies as well as the mummies of two fish.

Below you can see the mummy of a bull.