British Museum

Great Russell St, City of London WC1B 3DG
020 7323 8000 ‎

Tube : Holborn - Goodge St - Russell Square - Tottenham Court Road

http://www.britishmuseum.org/

The museum is open daily 10am to 5:30pm.

The Mummy collection is simply amazing...

V&A Museum of Childhood

Cambridge Heath Road London E2 9PA
020 8983 5200

Tube : Bethnal Green
Borough : Tower Hamlets
Free

http://www.vam.ac.uk/moc/

Craft activities for kids during school breaks - but usually quite popular. From experience 3pm is a good time to come queuing (shorter!)

National Gallery

Trafalgar Square London WC2N 5DN - 020 7747 2870
Tube : Charing cross or Leceister Square
Borough : Westminster
Free

http://www.nationalgallery.org.uk/

Holiday activities for kids, family trails, storytelling, artworkshop...

National Portrait Gallery

St Martin's Place London WC2H 0HE - Entrance behind the National Gallery (Trafalgar Square)
Tube : Charing Cross or Leicester Square
Borough : Westminster
Free

http://www.npg.org.uk/

Activities organized during school break for kids 3+ and 5+ - Need to be there 1hour onsite beforehand to get the tickets - quite popular

Ragged School Museum

46-50 Copperfield Road, London E3 4RR - 020 8980 6405

Tube : Mile End
Borough : Tower Hamlets
Free

http://www.raggedschoolmuseum.org.uk/nextgen/

A typical ragged school, a small museum with activities during the school breaks.
Visit incl activities for kids is about 1h30.

Educational websites on the topic : http://www.bbc.co.uk/schools/primaryhistory/victorian_britain/introduction/