# AI告诉英联邦公民（如加拿大、澳大利亚）如果祖父母在英国出生，可以申请英国血统签证，但未说明申请人必须是17-30岁的英联邦公民，且祖父母必须是在英国出生（不仅仅是英国公民）

- **ID:** `visa/uk-ancestry-visa-commonwealth`
- **领域:** visa
- **类别:** regulatory_barrier
- **错误码:** `UK_ANCESTRY_AGE_GRANDPARENT`
- **验证级别:** ai_generated
- **修复率:** 82%

## 根因

英国血统签证（附录血统）要求申请人必须是英联邦公民，申请时年龄17-30岁，且祖父母在英国出生（不仅是英国公民）；必须提供祖父母的出生证明作为证据

## 版本兼容性

| 版本 | 状态 | 引入 | 弃用 |
|------|------|------|------|
| Immigration Rules Appendix Ancestry (2024) | active | — | — |
| UKVI Caseworker Guidance - Ancestry | active | — | — |

## 解决方案

1. ```
   Obtain the grandparent's full birth certificate from the UK General Register Office (GRO): https://www.gov.uk/general-register-office. Order a certified copy if original is lost.
   ```
2. ```
   If over 30, consider the UK Skilled Worker visa (Health and Care visa for medical professionals) or Global Talent visa instead of Ancestry.
   ```
3. ```
   If not a Commonwealth citizen (e.g., US citizen), no Ancestry visa is available; explore other routes like Youth Mobility Scheme (if age-eligible) or Skilled Worker.
   ```

## 无效尝试

- **** — The rules specify grandparent only; great-grandparent does not meet the requirement (70% 失败率)
- **** — The grandparent must have been born in the UK, not just a UK citizen; birth certificate must show UK place of birth (80% 失败率)
- **** — The 17-30 age requirement is strict; no discretion exists for older applicants (90% 失败率)