Opening Times

Fully open every afternoon in August from 12 noon to 5pm for general entry and the Summer Bytes Festival.

The Colossus and Tunny galleries are open daily from 10.30am to 4pm (winter) or 5pm (summer).
The rest of TNMOC is open every Thursday, Saturday and Sunday afternoons from 12 noon.
There are frequent Insight Guided Tours at 10.30am and 2pm, see below for details. Booking required for Insight Guided Tours.
Every week day, the Museum usually has educational group and/or corporate group visits.
Weekend Codability sessions for young people run on Saturday and Sunday afternoons.
If you are coming to TNMOC only, there is no need to pay the Bletchley Park Trust entrance fee.

Additional Opening Times

Thanks to the efforts of the TNMOC volunteers, the Museum may also be open at other times - watch for updates below.

TNMOC Opening Times over the next few weeks

Date What's Open
Mo 24 Aug Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open 10.30am - 5pm
Tu 25 Aug Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open 10.30am - 5pm
We 26 Aug Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open 10.30am - 5pm
Th 27 Aug Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open 10.30am - 5pm
Fr 28 Aug Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open 10.30am - 5pm
Sa 29 Aug Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open 10.30am - 5pm
Su 30 Aug Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open 10.30am - 5pm
Mo 31 Aug Fully open 12 noon - 5pm, Colossus &Tunny Galleries open 10.30am - 5pm
Tu 1 Sep Colossus & Tunny Galleries open 10.30am - 5pm, Guided Tour 2pm, rest of Museum by appt
We 2 Sep Colossus and Tunny Galleries open 10.30am - 5pm, rest of Museum by appointment only
Th 3 Sep Fully open 12 noon - 5pm, Colossus & Tunny Galleries open 10.30am - 5pm, Guided Tour 10.30am
Fr 4 Sep Colossus & Tunny Galleries open 10.30am - 5pm, rest of Museum by appt
Sa 5 Sep Fully open 12 noon - 5pm, Colossus & Tunny Galleries open 10.30am - 5pm
Su 6 Sep Fully open 12 noon - 5pm, Colossus & Tunny Galleries open 10.30am - 5pm
Mo 7 Sep Colossus and Tunny Galleries open 10.30am - 5pm, rest of Museum by appointment only
Tu 8 Sep Colossus & Tunny Galleries open 10.30am - 5pm, Guided Tour 2pm, rest of Museum by appt
We 9 Sep Colossus and Tunny Galleries open 10.30am - 5pm, rest of Museum by appointment only
Th 10 Sep Fully open 12 noon - 5pm, Colossus & Tunny Galleries open 10.30am - 5pm, Guided Tour 10.30am
Fr 11 Sep Colossus & Tunny Galleries open 10.30am - 5pm, rest of Museum by appt
Sa 12 Sep Fully open 12 noon - 5pm, Colossus & Tunny Galleries open 10.30am - 5pm
Su 13 Sep Fully open 12 noon - 5pm, Colossus & Tunny Galleries open 10.30am - 5pm
Mo 14 Sep Colossus and Tunny Galleries open 10.30am - 5pm, rest of Museum by appointment only
Tu 15 Sep Colossus & Tunny Galleries open 10.30am - 5pm, Guided Tour 2pm, rest of Museum by appt
We 16 Sep Colossus and Tunny Galleries open 10.30am - 5pm, rest of Museum by appointment only
Th 17 Sep Fully open 12 noon - 5pm, Colossus & Tunny Galleries open 10.30am - 5pm, Guided Tour 10.30am
Fr 18 Sep Colossus & Tunny Galleries open 10.30am - 5pm, rest of Museum by appt
Sa 19 Sep Fully open 12 noon - 5pm, Colossus & Tunny Galleries open 10.30am - 5pm
Su 20 Sep Fully open 12 noon - 5pm, Colossus & Tunny Galleries open 10.30am - 5pm
Mo 21 Sep Colossus and Tunny Galleries open 10.30am - 5pm, rest of Museum by appointment only
Tu 22 Sep Colossus & Tunny Galleries open 10.30am - 5pm, Guided Tour 2pm, rest of Museum by appt
We 23 Sep Colossus and Tunny Galleries open 10.30am - 5pm, rest of Museum by appointment only
Th 24 Sep Fully open 12 noon - 5pm, Colossus & Tunny Galleries open 10.30am - 5pm, Guided Tour 10.30am
Fr 25 Sep Colossus & Tunny Galleries open 10.30am - 5pm, rest of Museum by appt
Sa 26 Sep Fully open 12 noon - 5pm, Colossus & Tunny Galleries open 10.30am - 5pm
Su 27 Sep Fully open 12 noon - 5pm, Colossus & Tunny Galleries open 10.30am - 5pm
Mo 28 Sep Colossus and Tunny Galleries open 10.30am - 5pm, rest of Museum by appointment only
Tu 29 Sep Colossus & Tunny Galleries open 10.30am - 5pm, Guided Tour 2pm, rest of Museum by appt
We 30 Sep Colossus and Tunny Galleries open 10.30am - 5pm, rest of Museum by appointment only
Th 1 Oct Fully open 12 noon - 5pm, Colossus & Tunny Galleries open 10.30am - 5pm, Guided Tour 10.30am
Fr 2 Oct Colossus & Tunny Galleries open 10.30am - 5pm, rest of Museum by appt
Sa 3 Oct Fully open 12 noon - 5pm, Colossus & Tunny Galleries open 10.30am - 5pm
Su 4 Oct Fully open 12 noon - 5pm, Colossus & Tunny Galleries open 10.30am - 5pm