Maximum credit limits on Vanquis credit cards typically scale up over time based on sustained responsible account management, but they rarely exceed 3,500 GBP to 4,000 GBP. Because Vanquis specializes in serving non-prime borrowers looking to rebuild credit, initial limits are kept conservative (often starting between 150 GBP and 1,000 GBP) to mitigate financial risk for both the customer and the institution.