Category:1803 in the United Kingdom

• 1803 in England‎ (3 C, 3 P)
• 1803 in Ireland‎ (2 C, 2 P)
• 1803 in Scotland‎ (1 C, 3 P)
• 1803 in Wales‎ (1 C, 1 P)

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• 1803 in the British Empire‎ (6 C, 1 P)

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• 1803 disestablishments in the United Kingdom‎ (3 P)
• 1803 establishments in the United Kingdom‎ (5 C, 3 P)

C

• 1803 crimes in the United Kingdom‎ (1 C)

E

• 1803 elections in the United Kingdom‎ (2 P)

L

• 1803 in British law‎ (2 C, 1 P)

N

• 1803 British novels‎ (2 P)

S

• 1803 in British sport‎ (1 C)