Open Letter: Call for an End to Routine Tail Docking and Castration of Lambs

Department for Environment, Food & Rural Affairs 

Seacole Building, 2 Marsham Street  

London SW1P 4DF 

Date: 29/08/26

Dear Secretary of State, 

Re: End the routine tail docking and castration of lambs 

We write to urge the Government to introduce an urgent end to the routine tail docking and castration of lambs.   

We welcome Defra’s recent public consultation on this issue and its commitment in the 2025 Animal Welfare Strategy to ‘work with the sheep sector to implement the advice and recommendations in the Animal Welfare Committee’s (AWC) ‘Opinion on the Implications of Castration and Tail Docking for the Welfare of Lambs’ (2024) and update the Sheep Welfare Code.’¹ We urge the Government to press ahead with this commitment and to significantly reduce the number of lambs subjected to these painful practices. 

Scientific Evidence of Harm 

A substantial body of evidence demonstrates that both castration and tail docking cause significant acute pain, tissue damage, and prolonged physiological and behavioural stress responses in lambs. These procedures induce pain through tissue injury, ischaemia (restriction of blood supply to tissues), and inflammation, with some methods, such as rubber rings, causing prolonged pain associated with tissue necrosis and delayed healing.² 

In response to these procedures, lambs exhibit clear behavioural signs of pain, including abnormal body postures, foot stamping, reduced normal activity, and changes in suckling and social behaviours.³  Research also indicates that newborn lambs may be equally or even more sensitive to painful stimuli than older animals.⁴ 

While pain relief can reduce some acute responses, it does not prevent the underlying tissue damage, inflammation, necrosis, and extended healing processes inherent to these procedures.⁵ Moreover, pain relief is often inconsistently applied and may be insufficient to fully mitigate the pain these procedures cause. As the British Veterinary Association has noted, pain mitigation does not render routine mutilation pain-free.⁶ 

Animal Welfare Committee Recommendations 

Castration and tail docking of lambs are currently routine husbandry practices, allowed under the Mutilations (Permitted Procedures) (England) Regulations 2007 for animal management convenience, market requirements, or production system constraints. The AWC argues that these justifications are not sufficient to warrant the infliction of significant and avoidable suffering on sentient animals.⁷ 

In its Opinion on the Implications of Castration and Tail Docking for the Welfare of Lambs, the Committee recommends that legislation across all UK administrations be urgently updated to reflect current scientific evidence, with revised provisions in place by 2028 at the latest. 

Crucially, the AWC proposes that both castration and tail docking should be strictly limited to specific circumstances, subject to veterinary oversight, and only permitted where there is a clear and evidence-based welfare justification and no viable alternative. 

These recommendations are consistent with earlier advice from the Farm Animal Welfare Committee, which stated that castration and tail docking should only be undertaken after a formal welfare risk assessment with a veterinary surgeon as part of a farm health and welfare plan, and that the Government should introduce systems to monitor their use and demonstrate welfare improvements.⁸ The AWC further recommends that anaesthesia and analgesia be routinely required whenever significant pain is likely, that improved and licensed pain relief methods be developed, and that reliance on routine husbandry mutilations be reduced through improved management systems.  

Recommended Government Action 

With regard to the scientific evidence, the proven detrimental effects on lamb welfare, and the AWC recommendations, we urge the Government to: 

• Prohibit routine tail docking and castration of lambs, including rubber ring, clamp, clip, combined, and hot iron methods;  

• Allow only narrow veterinary exceptions where clinically necessary for the treatment of an individual animal, with mandatory effective pain relief;  

• Introduce strong oversight and enforcement, including regular inspections and reporting of all animals subjected to these procedures, with clear veterinary justification required in each case;  

• Bring amended legislation into force by 2028 at the latest, in line with the Animal Welfare Committee’s recommendation, and publish a clear implementation timetable this year; 

• Require all imported food to meet UK animal welfare standards; 

• Support a transition away from animal husbandry systems that rely on painful mutilations as standard and incentivise greater farming diversification particularly focused on boosting our arable and horticultural sectors, enabling greater UK food security and a shift towards fibre-rich diets in support of better public health. 

Yours sincerely, 

1. Baroness Bennett of Manor Castle 

2. Sîan Berry MP 

3. Richard Burgon MP 

4. Ian Byrne MP 

5. Irene Campbell MP   

6. Baroness Cass 

7. Carla Denyer MP   

8. Neil Duncan-Jordan MP  

9. Alex Easton MP  

10. Cat Eccles MP   

11. Andrew George MP 

12. Baroness Hodgson of Abinger 

13. Baroness Jones of Moulsecoomb   

14. Rachael Maskell MP 

15. Alex Mayer MP 

16. Kerry McCarthy MP 

17. John McDonnell MP 

18. Iqbal Mohamed MP  

19. Toby Perkins MP  

20. Adrian Ramsay MP   

21. Baroness Redfern 

22. Bell Ribeiro-Addy MP 

23. Hannah Spencer MP   

24. Baroness Young of Hornsey 

Also supported by: 

Mary McCartney 

¹ Department for Environment, Food and Rural Affairs (2025) Animal Welfare Strategy for England 

² Kent, J.E., Molony, V. and Graham, M.J. (1993). Comparison of methods for the castration of lambs. Veterinary Record, 133(3), pp. 68–70. 

³ Maslowska 2020; Guesgen 2016; Lester 1996; Grant 2004; Marchewka 2016.  

⁴ Guesgen et al. (2011); Kent et al. (1993); Johnson et al. (2009). 

⁵ Melches et al. (2007); Harris et al. (2021); Woods and Adcock (2025).  

⁶ British Veterinary Association (2020) Sheep castration tail–docking and pain management 

⁷ Animal Welfare Committee (2022) Opinion on the Implications of Castration and Tail Docking for the Welfare of Lambs. 

⁸ Farm Animal Welfare Committee (2008) Report on the Implications of Castration and Tail Docking for the Welfare of Lambs.