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.
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 Museum volunteers, the Museum may also be open at other times, so keep an eye below for updates.

TNMOC Opening Times over the next few weeks

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