Company: NEWEN
Filing Date: 2025-05-22
Form Type: 6-K
Source: 0001654954-25-006032
Chunk: 1

Company: NATIONAL GRID PLC
Filing Date: 2025-05-22
Form: 6-K
Chunk 1
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 its total interest in National Grid voting ordinary shares is as shown below.

<div align='center'>TR-1: Standard form for notification of major holdings</div>

#### 1. Issuer Details

#### ISIN
| GB00BDR05C01 |

#### Issuer Name
| NATIONAL GRID PLC |

#### UK or Non-UK Issuer
| UK |

#### 2. Reason for Notification
| An acquisition or disposal of voting rights; An acquisition or 
 disposal of financial instruments                              |

**3. Details of person subject to the notification obligation**

#### Name
| Bank of America Corporation |

#### City of registered office (if applicable)

#### Country of registered office (if applicable)
| US |

#### 4. Details of the shareholder
**Full name of shareholder(s) if different from the person(s) subject to the notification obligation, above**

#### City of registered office (if applicable)

#### Country of registered office (if applicable)
**5. Date on which the threshold was crossed or reached**

| 19-May-2025 |

#### 6. Date on which Issuer notified
| 21-May-2025 |

**7. Total positions of person(s) subject to the notification obligation**

|                                                       |                                                  % 
 of voting rights attached to shares (total of 8.A) |                                                                % 
 of voting rights through financial instruments (total of 8.B 1 + 
                                                           8.B 2) |                    Total 
 of both in % (8.A + 8.B) |                                  Total 
 number of voting rights held in issuer |
| Resulting situation                                   
 on the date on which threshold was crossed or reached |                                           2.972203 |                                                         2.611212 |                 5.583415 |                              273657759 |
| Position of                                           
 previous notification (if applicable)                 |                                           1.502416 |                                                         0.319666 |                 1.822082 |                                        |

**8. Notified details of the resulting situation on the date on which the threshold was crossed or reached**

#### 8A. Voting rights attached to shares
| Class/Type of shares ISIN code(if possible) | Number of direct voting rights (DTR5.1) | Number of indirect voting rights (DTR5.2.1) | % of direct voting rights (DTR5.1) | % of indirect voting rights (DTR5.2.1) |
| GB00BDR05C