The main issue of this article is the current state of affairs concerning patent trolling in Great Britain. There is a possibility that this country might be the main focus of the activities of trolls in the future. Therefore, the description of the British patent system with a bit of a comparison with the American system hopefully can answer, why so far patent trolls were not fully successful in Great Britain. Moreover, the article briefly presents the most significant case so far in the matter of patent trolling in Great Britain which constitutes a precedent applying to standard-essential patents and FRAND rules. Furthermore, the problematic aspects of the establishment of a European patent with unitary effect as well as the Unified Patent Court arise. The new court may tempt patent trolls and simplify their actions. However, Great Britain does not remain idle. A new law has been introduced — Intellectual Property (Unjustified Threats) Act 2017. The purpose of the bill is to provide a protection against groundless threats of infringement proceedings.