Atlasgeo: United Kingdom
- Animated flag image, free for personal use.
- http://www.atlasgeo.net/flags/anglais/html/Eunitedkingdom.htm

How to Draw the Union Jack -- Accurately.
- The specification of the flag of the United Kingdom
- http://www.jdawiseman.com/papers/union-jack/union-jack.html

Northern Ireland
- Small GIF.
- http://www.theodora.com/flags_13a.html

England
- Small GIF of St. George's Cross.
- http://www.theodora.com/flags_5c.html

British Like Flags
- British like and Commonwealth Flags from the Flag Identifier. They resemble or contain the Union Jack.
- http://www.photius.com/flags/british_related.html