Almost every place in the UK has its own flag and now is your chance to test your knowledge.
There are 59 different county and regional flags in the UK and Greater London has one of them.
Of the designs, the cross is the most popular design feature and is included on 20 of the regional flags.
There are also 12 flags which feature animals, including a bustard, a deer, eagles, a swan, crows, a horse and goats.
Other popular symbols are crowns or towers, while seven flags feature a symbol of the natural world with a flower, fruit or plant on them.
And if you're not already "flagged out", there are also 36 city and town flags plus 24 national flags.
Can you match up Surrey with its flag? Take our test to find out.
If you want to check your answers, visit The UK's National Flag Charity website - but no sneak peaking!
