Exhibit 11
British American Tobacco p.l.c.
21 September 2026
TRANSACTION IN OWN SHARES
British American Tobacco p.l.c. (the "Company") announces that in accordance with the authority granted by shareholders at the Company's Annual General Meeting on 15 April 2026 it purchased the following number of its ordinary shares of 25 pence each ("Shares") from Goldman Sachs International during the period from 14 September 2026 to 18 September 2026 as part of its buyback programme announced on 18 March 2024:
| Date of purchase: | 14 September 2026 | 15 September 2026 | 16 September 2026 | 17 September 2026 | 18 September 2026 |
| Number of ordinary shares of 25 pence each purchased: | 100,000 | 100,000 | 100,0000 | 100,000 | 100,000 |
| Highest price paid per share (pence): | 4,250.00p | 4,221.00p | 4,236.00p | 4,248.00p | 4,219.00p |
| Lowest price paid per share (pence): | 4,176.00p | 4,162.00p | 4,192.00p | 4,185.00p | 4,169.00p |
| Volume weighted average price paid per share (pence): | 4,231.93p | 4,195.63p | 4,211.82p | 4,207.59p | 4,197.76p |
The Company intends to cancel the purchased Shares.
Following the purchase and cancellation of these Shares, the Company will have 2,158,481,742 ordinary shares in issue (excluding treasury shares) which carry voting rights and will hold 132,648,864 ordinary shares in treasury. This information may be used by shareholders to determine whether they are required to notify their interest, or a change to their interest, in the Company under the FCA's Disclosure Guidance and Transparency Rules.
In accordance with Article 5(1)(b) of the Market Abuse Regulation (EU) No 596/2014 as it applies in the UK, a schedule of individual trades carried out by Goldman Sachs International during the period set out above is detailed in the attached:
http://www.rns-pdf.londonstockexchange.com/rns/6164V_1-2026-9-21.pdf
http://www.rns-pdf.londonstockexchange.com/rns/6164V_2-2026-9-21.pdf
http://www.rns-pdf.londonstockexchange.com/rns/6164V_3-2026-9-21.pdf
http://www.rns-pdf.londonstockexchange.com/rns/6164V_4-2026-9-21.pdf
http://www.rns-pdf.londonstockexchange.com/rns/6164V_5-2026-9-21.pdf
Enquiries:
Investor Relations
Victoria Buxton | IR_team@bat.com
Schedule of purchases - aggregate information
| Issuer name | ISIN Code | Transaction date | Daily total volume (in number of shares) |
Daily weighted average price of shares acquired |
Platform |
| British American Tobacco p.l.c. | GB0002875804 | 14/09/2026 | 100,000 | 4,231.93p | LSE |
| British American Tobacco p.l.c. | GB0002875804 | 14/09/2026 | 0 | 0.00p | CHIX |
| British American Tobacco p.l.c. | GB0002875804 | 14/09/2026 | 0 | 0.00p | BATE |
| British American Tobacco p.l.c. | GB0002875804 | 15/09/2026 | 100,000 | 4,195.63p | LSE |
| British American Tobacco p.l.c. | GB0002875804 | 15/09/2026 | 0 | 0.00p | CHIX |
| British American Tobacco p.l.c. | GB0002875804 | 15/09/2026 | 0 | 0.00p | BATE |
| British American Tobacco p.l.c. | GB0002875804 | 16/09/2026 | 100,000 | 4,211.82p | LSE |
| British American Tobacco p.l.c. | GB0002875804 | 16/09/2026 | 0 | 0.00p | CHIX |
| British American Tobacco p.l.c. | GB0002875804 | 16/09/2026 | 0 | 0.00p | BATE |
| British American Tobacco p.l.c. | GB0002875804 | 17/09/2026 | 100,000 | 4,207.59p | LSE |
| British American Tobacco p.l.c. | GB0002875804 | 17/09/2026 | 0 | 0.00p | CHIX |
| British American Tobacco p.l.c. | GB0002875804 | 17/09/2026 | 0 | 0.00p | BATE |
| British American Tobacco p.l.c. | GB0002875804 | 18/09/2026 | 100,000 | 4,197.76p | LSE |
| British American Tobacco p.l.c. | GB0002875804 | 18/09/2026 | 0 | 0.00p | CHIX |
| British American Tobacco p.l.c. | GB0002875804 | 18/09/2026 | 0 | 0.00p | BATE |