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looper23: Roydon station
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looper23: Roydon station and crossing signal box
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looper23: control room, Halls Green LN70 HAA site, Essex
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looper23: control room, Halls Green LN70 HAA site, Essex
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looper23: control room, Halls Green LN70 HAA site, Essex
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looper23: control room, Halls Green LN70 HAA site, Essex
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looper23: control room, Halls Green LN70 HAA site, Essex
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looper23: control room, Halls Green LN70 HAA site, Essex
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looper23: control room, Halls Green LN70 HAA site, Essex
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looper23: control room, Halls Green LN70 HAA site, Essex
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looper23: gun positions, Halls Green LN70 HAA site, Essex
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looper23: gun positions, Halls Green LN70 HAA site, Essex
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looper23: gun positions, Halls Green LN70 HAA site, Essex
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looper23: gun positions, Halls Green LN70 HAA site, Essex
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looper23: gun positions, Halls Green LN70 HAA site, Essex
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looper23: gun positions, Halls Green LN70 HAA site, Essex
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looper23: gun positions, Halls Green LN70 HAA site, Essex
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looper23: gun positions, Halls Green LN70 HAA site, Essex
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looper23: gun positions, Halls Green LN70 HAA site, Essex
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looper23: gun positions, Halls Green LN70 HAA site, Essex
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looper23: stand-by generator room, Halls Green LN70 HAA site, Essex
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looper23: stand-by generator room, Halls Green LN70 HAA site, Essex
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looper23: stand-by generator room, Halls Green LN70 HAA site, Essex
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looper23: stand-by generator room, Halls Green LN70 HAA site, Essex
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looper23: stand-by generator room, Halls Green LN70 HAA site, Essex
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looper23: stand-by generator room, Halls Green LN70 HAA site, Essex
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looper23: stand-by generator room, Halls Green LN70 HAA site, Essex
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looper23: stand-by generator room, Halls Green LN70 HAA site, Essex
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looper23: stand-by generator room, Halls Green LN70 HAA site, Essex
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looper23: gun positions, Halls Green LN70 HAA site, Essex