Background Facial composite tissue allotransplantation (CTA) may be considered in cases of severe facial injury. To date, no reports have analysed the cost of potential facial CTA in the UK. The aims of this study were to establish (1) the cost implications without facial CTA, necessitating multiple reconstructive procedures in cases with severe facial deformities, and (2) if facial CTA would be cost-effective in the UK given recent European and North American published cost analyses. Methods Hospital episodes' data from two potential candidates for facial CTA were used to calculate cost of treatment. In these cases, severe facial trauma was managed by multiple disciplinary teams performing numerous conventional reconstructive procedures. One case served as an indicator of the cost of primary reconstruction during the immediate post-traumatic episode, from admission until first discharge. The other served as an indicator of the accumulative cost of care following primary reconstruction from first discharge to six years later. Costs incurred served as a guide for the cost of standard reconstruction in the UK. These were compared with the costs of similar reconstructive procedures performed in the USA. This was used with data reporting the cost of facial CTA in the USA and France to predict the cost of facial CTA in the UK. Results Analysis revealed a cost benefit for facial CTA in a UK context that would become apparent from the third year posttransplant onwards. Conclusion Facial CTA may therefore be a more cost-effective long-term reconstructive option for patients with severe facial defects. Level of evidence: Level V, risk/prognostic study. declare that they have no conflict of interest.Ethical approval For this retrospective evaluation of cost, ethical approval is not required. However, all procedures performed were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.Informed consent For this type of study, formal consent is not required.Eur J Plast Surg (2020) 43:219-224 223Open Access This article is distributed under the terms of the Creative Comm ons Attribution 4.0 International License (http:// creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.