Opening Times

The Colossus Galleries are open daily from 10.30am to 5pm. The full museum is open every Thursday, Saturday and Sunday afternoons from 12 noon to 5pm. And daily during August for the Summer Bytes Festival. There are Insight Guided Tours at 10.30am on Thursdays and 2pm on Tuesdays, see below for details. Booking required for Insight Guided Tours.
Every week day, the Museum accepts advanced bookings for educational group and/or corporate group visits.
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 22 Aug Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm
Tu 23 Aug Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm Guided Tour 2pm
We 24 Aug Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm
Th 25 Aug Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm, Guided Tour 10.30am
Fr 26 Aug Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm
Sa 27 Aug Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm
Su 28 Aug Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm
Mo 29 Aug Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm
Tu 30 Aug Colossus Galleries open 10.30am - 5pm, Guided Tour 2pm, full Museum groups by appointment only
We 31 Aug Colossus Galleries open 10.30am - 5pm, full Museum groups by appointment only
Th 1 Sep Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm, Guided Tour 10.30am
Fr 2 Sep Colossus Galleries open 10.30am - 5pm, full Museum groups by appointment only
Sa 3 Sep Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm
Su 4 Sep Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm
Mo 5 Sep Colossus Galleries open 10.30am - 5pm, full Museum groups by appointment only
Tu 6 Sep Colossus Galleries open 10.30am - 5pm, Guided Tour 2pm, full Museum groups by appointment only
We 7 Sep Colossus Galleries open 10.30am - 5pm, full Museum groups by appointment only
Th 8 Sep Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm, Guided Tour 10.30am
Fr 9 Sep Colossus Galleries open 10.30am - 5pm, full Museum groups by appointment only
Sa 10 Sep Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm
Su 11 Sep Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm
Mo 12 Sep Colossus Galleries open 10.30am - 5pm, full Museum groups by appointment only
Tu 13 Sep Colossus Galleries open 10.30am - 5pm, Guided Tour 2pm, full Museum groups by appointment only
We 14 Sep Colossus Galleries open 10.30am - 5pm, full Museum groups by appointment only
Th 15 Sep Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm, Guided Tour 10.30am
Fr 16 Sep Colossus Galleries open 10.30am - 5pm, full Museum groups by appointment only
Sa 17 Sep Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm
Su 18 Sep Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm
Mo 19 Sep Colossus Galleries open 10.30am - 5pm, full Museum groups by appointment only
Tu 20 Sep Colossus Galleries open 10.30am - 5pm, Guided Tour 2pm, full Museum groups by appointment only
We 21 Sep Colossus Galleries open 10.30am - 5pm, full Museum groups by appointment only
Th 22 Sep Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm, Guided Tour 10.30am
Fr 23 Sep Colossus Galleries open 10.30am - 5pm, full Museum groups by appointment only
Sa 24 Sep Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm
Su 25 Sep Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm
Mo 26 Sep Colossus Galleries open 10.30am - 5pm, full Museum groups by appointment only
Tu 27 Sep Colossus Galleries open 10.30am - 5pm, Guided Tour 2pm, full Museum groups by appointment only
We 28 Sep Colossus Galleries open 10.30am - 5pm, full Museum groups by appointment only
Th 29 Sep Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm, Guided Tour 10.30am
Fr 30 Sep Colossus Galleries open 10.30am - 5pm, full Museum groups by appointment only
Sa 01 Oct Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm
Su 02 Oct Fully open 12 noon - 5pm, Colossus Galleries open 10.30am - 5pm