Your visa vignette in your passport will be valid for travel for 30 days.
This 30 days will either start on the date you put as your Intended Travel Date on the application form (or a few days before), or it will start from around the date the decision was made, if your intended travel date has already passed.
You will have the 30 days listed on the vignette to enter the UK. Then you will have 10 days to pick up your BRP card from the designated Post Office once you arrive in the UK.
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