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.

TNMOC Opening Times over the next few weeks

Date What's Open
Mo 25 May Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open 10.30am - 5pm
Tu 26 May Insight Tours at 10.30am & 2pm, Colossus & Tunny open 10.30am-5pm, rest of TNMOC by appt only
We 27 May Colossus and Tunny Galleries open all day, rest of TNMOC by appointment only
Th 28 May Insight Tours at 10.30am, Fully open 12noon-5pm, Colossus &Tunny Galleries open 10.30am-5pm
Fr 29 May Insight Tours at 10.30am and 2pm, Colossus & Tunny open 10.30am-5pm, rest of TNMOC by appt only
Sa 30 May Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open 10.30am - 5pm
Su 31 May Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open 10.30am - 5pm
Mo 1 Jun Colossus and Tunny Galleries open 10.30am - 5pm, rest of TNMOC by appointment only
Tu 2 Jun 2pm Insight Tour, Colossus and Tunny Galleries open 10.30am-5pm, rest of TNMOC by appt only
We 3 Jun Colossus and Tunny Galleries open all day, rest of TNMOC by appointment only
Th 4 Jun 10.30am Insight Tour, Fully open 12noon-5pm, Colossus and Tunny Galleries open 10.30am-5pm
Fr 5 Jun Colossus and Tunny Galleries open 10.30am - 5pm, rest of TNMOC by appointment only
Sa 6 Jun Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open 10.30am - 5pm
Su 7 Jun Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open 10.30am - 5pm
Mo 8 Jun Colossus and Tunny Galleries open 10.30am - 5pm, rest of TNMOC by appointment only
Tu 9 Jun Colossus and Tunny Galleries open 10.30am - 5pm, rest of TNMOC by appointment only
We 10 Jun Colossus and Tunny Galleries open 10.30am - 5pm, rest of TNMOC by appointment only
Th 11 Jun 10.30am Insight Tour, Fully open 12noon-5pm, Colossus &Tunny Galleries open 10.30am-5pm
Fr 12 Jun Colossus and Tunny Galleries open 10.30am - 5pm, rest of TNMOC by appointment only
Sa 13 Jun Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open 10.30am - 5pm
Su 14 Jun Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open 10.30am - 5pm
Mo 15 Jun Colossus and Tunny Galleries open 10.30am - 5pm, rest of TNMOC by appointment only
Tu 16 Jun 2pm Insight Tour, Colossus and Tunny Galleries open 10.30am-5pm, rest of TNMOC by appt only
We 17 Jun Colossus and Tunny Galleries open 10.30am - 5pm, rest of TNMOC by appointment only
Th 18 Jun 10.30am Insight Tour, Fully open12 noon-5pm, Colossus & Tunny Galleries open 10.30am-5pm
Fr 19 Jun Colossus and Tunny Galleries open 10.30am - 5pm, rest of TNMOC by appointment only
Sa 20 Jun Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open 10.30am - 5pm
Su 21 Jun Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open 10.30am - 5pm
Mo 22 Jun Colossus and Tunny Galleries open 10.30am - 5pm, rest of TNMOC by appointment only
Tu 23 Jun 2pm Insight Tour, Colossus & Tunny Galleries open 10.30am-5pm, rest of TNMOC by appt only
We 24 Jun Colossus and Tunny Galleries open 10.30am - 5pm, rest of TNMOC by appointment only
Th 25 Jun Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open 10.30am - 5pm
Fr 26 Jun Colossus and Tunny Galleries open 10.30am - 5pm, rest of TNMOC by appointment only
Sa 27 Jun Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open 10.30am - 5pm
Su 28 Jun Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open 10.30am - 5pm
Mo 29 Jun Colossus and Tunny Galleries open 10.30am - 5pm, rest of TNMOC by appointment only
Tu 30 Jun 2pm Insight Tour, Colossus and Tunny Galleries open 10.30am-5pm, rest of TNMOC by appt only
We 31 Jun Colossus and Tunny Galleries open 10.30am - 5pm, rest of TNMOC by appointment only
Th 1 Jul Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open 10.30am - 5pm
Fr 2 Jul Colossus and Tunny Galleries open 10.30am - 5pm, rest of TNMOC by appointment only
Sa 3 Jul Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open 10.30am - 5pm
Su 4 Jul Fully open from 12 noon - 5pm, Colossus and Tunny Galleries open 10.30am - 5pm