F Block and Annexe

There were 10 Colossus machines on site. Two were housed in the Annex of F Block and five in the main building. Three were housed in H Block.

F Block contained the Testery, which was home to about eight Tunny machines.

Photo: The only remaining step into F Block (annexe) © LSA July 2007.

| EXIT | F Block and Annexe |

| Blocks: A | B | C | D | E | F | G | H | Location |

Introduction

F Block (built in 1943) was a single storey building with 16 spurs off a central corridor together with an 'E-shaped' annexe on the south side. At one time there was a total of 10 Colossus machines housed within F and H Block.

Gifford House

From about 1949, F Block was the dormitory for Post Office staff during their training courses at The Park. A cinema was installed to one of the spurs circa 1955. During British Telecom's occupation of the site, the whole block was demolished in 1987.

	F Block - Men's double bedroom. Photo: P 4432 © BT Heritage 1950.
	F Block - Instructor's bedroom. Photo: P 4433 © BT Heritage 1950.
	Harrier Jump Jet. In the background a new housing estate can be seen on the site of Faulkner House. Photo: A Harrier Jump Jet parked on the site of F Block © LSA July 2007.
	F Block Annexe site. Photo: Building a new car park on F Block Annexe site © LSA June 2013.
	F Block Annexe site is now a car park. Photo: Looking through the gate across the new car park © LSA August 2015.
Location
	How it was: Screenshot showing location within Park. Map/image © 2007 Google and Infoterra Ltd & Bluesky, The GeoInformation Group.

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