Police Station layout, and typical police procedure

[RedMattis]

The characters screwed up and got caught in an alley covered in vampire/demon/whatever blood and with numerous weapons, they were caught by the British "Specialist Firearms Command", that is, pretty much SWAT. They immediately surrendered. More on the conditions of their capture later.

I'm wondering about what sort of layout a police station tends to have. Does it have the cells in the cellar? Are there security checkpoints or something like that, or could someone walk straight from the cell to the back/front door and exit?

I'm also wondering how exactly the police tends to do after they have captured some potentially very dangerous people like them? Do they walk down the whole bunch into ... wherever the cells are and shove them in there, and how does the procedure go in short after they have got in there?






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So, here is the long version of what happened for those interested in the details:
The Event
Our heroes, the characters went to one of the younger characters school-party to stop a classmate turned evil vampire-thing from turning it into a massacre.
Things went badly, and after another classmate came back as a confused monster and started killing people one of the two policemen at the cafeteria outside ended up calling in a team after they came to the conclusion that it was a dangerous hostage situation.
One of the characters is an acquaintance to one of the cops I might add. Her name is Claire.

After the cops noticed that people were getting killed in there they ran in despite the fact that the fuse box had been wrecked and the place was as black as the night (...it was nighttime by the way). Horribly unstrategic, choice made by Claire in an attempt to play hero. The character, after getting flashlights from the cops car ran in themselves, along with an aging vampire hunter.
They managed to kill one student-turned-monster in there, but it melted into ash and yucky goo.

Meanwhile two characters managed to catch a monster trying to drag a student into an alley. They managed to kill the monster, which reacted in the same way as the one mentioned before.

Soon all the characters had escaped out into the alley while the Team supposed to deal with this were rolling in on the street.
They stayed to long discussing what to do, and the team found them and arrested them.


Characters:
One (VERY attractive) poetry teacher, who happens to be some sort of vampire (fake metabolism, quite difficult to prove to be supernatural without a christian cross)
Found with a modified IMI Desert Eagle 50AE, which he did not have a licence to. The gun has blood in it having been fired at point blank.

Two Students, one of them carrying a sabre with traces of blood. Both 16 years old.
Both are Espers. One having Precognitive powers, and the other having telekinesis.
One of them had a sabre and a pair of brass knuckles with blades attacted to the bottom for stabbing.

A 30-something years old journalist who lives under fake identity. Erased from register's by corrupt policemen. ...who currently want him dead. One of them is at the station and will likely figure out who he is if he gets a bit of info.
Previously wrote about PSI phenomenon and such.
Found with a 9mm without a licence.

Another 30 something guy who works kabbalistic style rituals. The police has no information on him at all.
Found with a used kris.

The campaign is of a 'Secrets' nature so supernatural things are unknown to the mundanes :P


It's worth adding that the cop Claire was reassigned to the city after almost getting killed by corrupted cops in the Journalist's Prologue. Thanks to a retired cop called "Light".

/End Extra information
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So, does anyone have any answers? :)

Edit: Even with a Lifting Strength of 26, and a Striking ST of 18 physically breaking out of a cell wouldn't really be realistic would it?

Edit 2: I'll be continuing the campaign early tomorrow, so I really need to try figuring this out pretty quick ^_^;;