The UK Ministry of Defence is standing up No III Space Effects Squadron, a new RAF unit tasked with defending British satellites and conducting offensive electronic warfare operations in orbit. Defence Secretary Wes Streeting will announce the squadron at the Space Power conference in London on Wednesday, framing space control as this century's equivalent of 19th-century naval dominance and 20th-century air superiority. The unit joins two existing formations — No I Space Operations Squadron and No II Space Warning Squadron — which currently monitor and warn of orbital threats. The new squadron's mandate is to act on those warnings, using electronic warfare to "disrupt, degrade and deny hostile actions" targeting UK satellites used for missile warning, communications, and navigation. The MoD says it will draw specialist personnel from across the armed forces and expand as new capabilities come online. The strategic context is straightforward. UK Space Command acknowledged last year that Russia was routinely attempting to jam British military satellites. The US established Space Force in 2019 and disclosed earlier this month that it had deployed weapons in space for the first time — a move China's foreign ministry condemned as "preparing for war in outer space." Britain is responding to a domain that has already been militarised by its allies and adversaries alike. The funding picture is more interesting than the squadron itself. The government's broader space strategy allocates £7.8bn across the space sector through 2030, including £30m for the SaxaVord Spaceport on Shetland — the UK's first vertical launch site. Business Secretary Jonathan Reynolds has separately emphasised strengthening sovereign satellite launch capability. The question is whether this money builds genuine industrial capacity or flows primarily to established defence contractors. Britain has formally ruled out destructive anti-satellite missile testing and says it continues to work through the UN committee on the peaceful uses of outer space to promote responsible norms. This is a meaningful constraint — it signals electronic and cyber warfare as the preferred toolkit rather than kinetic kill vehicles, which generate debris fields hazardous to all spacefaring nations. The restraint is strategically rational, not merely diplomatic. Air Chief Marshal Sir Harv Smyth frames the shift bluntly: "Space no longer supports operations from the sidelines. It's a domain of direct competition, where our military advantage can be won or lost." This is accurate but understates how dependent all modern military operations — precision-guided munitions, ISR, secure communications — already are on orbital assets. The squadron formalises protection of infrastructure that has been critical for decades. The twenty-year question is whether the UK can sustain space sovereignty at a scale that matters, or whether this becomes another domain where Britain depends on American architecture while maintaining a symbolic national presence. The £7.8bn commitment is real but modest against the US Space Force budget of roughly $30bn annually. SaxaVord and sovereign launch are the generative bets; the squadron itself is table stakes.