Opening Times

General Opening Times

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.

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

TNMOC Opening Times over the next few weeks

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