The UK government finds itself embroiled in a significant legal battle as ENRC, the UK-based arm of a global mining conglomerate, pursues a staggering $1 billion damages claim. Backed by Russian banks under international sanctions, ENRC alleges losses resulting from a decade-long Serious Fraud Office (SFO) investigation that was terminated last year. The SFO, seeking to appeal against a ruling that deemed its investigation as wrongful, faces the daunting prospect of defending against this extraordinary claim, which surpasses its annual budget tenfold and poses a significant setback for the agency.