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In a week marked by significant economic developments, Centrica and Rolls Royce emerged as frontrunners in the FTSE 100, buoyed by a pivotal nuclear partnership between the UK and the US. This agreement promises to expedite the deployment of small modular reactors (SMRs), with Centrica collaborating with US-based X Energy to construct a fleet capable of generating 960 megawatts at the Hartlepool site, sufficient for 1.5 million homes. The pact's regulatory implications, notably the fast-tracking of design checks, stand to benefit Rolls Royce's SMR division as it seeks US approval.

Conversely, Sainsbury's shares surged over 5% after confirming discussions with JD.com regarding a potential sale of Argos, despite ultimately walking away from negotiations due to heightened demands from the Chinese retailer. This decision highlights the ongoing challenges in the UK retail sector, particularly against a backdrop of a declining housing market, which saw its first annual price drop since January 2024.

In the pharmaceutical realm, AstraZeneca's shares fell sharply, reflecting concerns over its paused expansion plans in Cambridge, which investors interpreted as a setback for the UK pharmaceutical landscape. Additionally, BT Group's stock dipped after announcing new board appointments linked to a significant stake acquisition by Indian billionaire Sunil Bharti Mittal, signaling a shift in corporate governance dynamics.

As the week unfolds, attention turns to forthcoming monetary policy decisions from central banks on both sides of the Atlantic. Market analysts anticipate potential shifts in interest rates, with the Bank of England poised to maintain a cautious stance amidst persistent inflation pressures. Meanwhile, China's mixed economic data—showing weaker-than-expected industrial and retail sales—adds another layer of complexity, leading to calls for further stimulus to bolster investment and consumption.

Overall, as the FTSE 100 navigates these headwinds, the nuclear pact between the UK and US signifies a strategic pivot towards energy security and technological advancement, even as broader economic uncertainties loom.