Answer:

toweroflondon

AnswerCrossword Clue
TOWEROFLONDONQueen Elizabeth I was incarcerated here
TOWEROFLONDONCrown jewels repository
TOWEROFLONDONCastle on the Thames
TOWEROFLONDONTraitors' Gate locale
TOWEROFLONDONBritish auto service?