Opening Times

General Opening Times

The Colossus and Tunny galleries are open daily.
The rest of TNMOC is open every Thursday, Saturday and Sunday afternoons from 12 noon.
There are usually Insight Guided Tours at 2pm on Tuesdays, but there are exceptions and additions to this so please check the listing below. 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 30 Mar Colossus and Tunny Galleries open all day, rest of TNMOC by appointment only
Tu 31 Mar 2pm Insight Tour, Colossus and Tunny Galleries open all day, rest of TNMOC by appointment only
We 1 Apr Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open all day
Th 2 Apr Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open all day
Fr 3 Apr Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open all day
Sa 4 Apr Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open all day
Su 5 Apr Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open all day
Mo 6 Apr Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open all day
Tu 7 Apr Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open all day
We 8 Apr Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open all day
Th 9 Apr Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open all day
Fr 10 Apr Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open all day
Sa 11 Apr Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open all day
Su 12 Apr Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open all day
Mo 13 Apr Colossus and Tunny Galleries open all day, rest of TNMOC by appointment only
Tu 14 Apr 2pm Insight Tour, Colossus and Tunny Galleries open all day, rest of TNMOC by appointment only
We 15 Apr Colossus and Tunny Galleries open all day, rest of TNMOC by appointment only
Th 16 Apr Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open all day
Fr 17 Apr Colossus and Tunny Galleries open all day, rest of TNMOC by appointment only
Sa 18 Apr Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open all day
Su 19 Apr Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open all day
Mo 20 Apr Colossus and Tunny Galleries open all day, rest of TNMOC by appointment only
Tu 21 Apr 2pm Insight Tour, Colossus and Tunny Galleries open all day, rest of TNMOC by appointment only
We 22 Apr Colossus and Tunny Galleries open all day, rest of TNMOC by appointment only
Th 23 Apr Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open all day
Fr 24 Apr Colossus and Tunny Galleries open all day, rest of TNMOC by appointment only
Sa 25 Apr Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open all day
Su 26 Apr Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open all day