Counter-Terror Probe at Whitechapel Synagogue; Starmer Warns Iran

The Whitechapel fire ran through the day's politics. Counter-terrorism police are investigating a suspected arson attack at the former East London Central Synagogue, where the London Fire Brigade put out a small exterior fire reported at 05:16 BST; the Metropolitan Police said initial CCTV footage showed the fire was started deliberately. Det Ch Supt Brittany Clarke, who leads policing in the area, said the building "has not been operational as a synagogue for some years but that will be of little comfort to the Jewish community in Tower Hamlets, Hackney and beyond." Cdr Helen Flanagan, the head of counter-terrorism policing, said officers were examining links to a string of arson attacks at Jewish sites in north and north-west London since late March, and to a double stabbing in Golders Green being treated as terrorism. Most of those incidents have been claimed by a group calling itself Hayi, suspected of being Iran-backed. The threat level has been raised to severe.

Downing Street's response carried the political weight. Prime Minister Keir Starmer hosted a No 10 summit on rising anti-Jewish hate and warned Iran that attempts to incite antisemitism in the UK "will not be tolerated." He announced new funding for the Community Security Trust and additional anti-terror powers, and said police were investigating whether a foreign state was behind the recent wave of attacks, including the Golders Green stabbing. The two strands -- Whitechapel investigation and Downing Street announcements -- moved as a single piece of policy on the day.

Westminster pushed through the day's other constitutional milestone. The House of Lords expelled its hereditary peers, fulfilling a Labour Party manifesto pledge: when King Charles III opens the new parliamentary session on May 13, almost no members will hold their seat by birthright. A transitional arrangement leaves about two dozen hereditary peers in place to ensure continuity of expertise on certain committees, but the principle is settled. The vote closes a chapter that has run since the 1999 reform, when the chamber retained 92 hereditary seats as a compromise.

The economic backdrop sharpened in parallel. UK long-term borrowing costs rose to their highest level since 1998, with yields on long-dated gilts pricing in sustained fiscal-and-inflation pressure. The move marks an explicit market verdict on the cost of government debt and tightens the Treasury's room as the spending review approaches.

Two further items rounded out the day. The UK's Independent Anti-Slavery Commissioner reported a record 23,000 potential modern-slavery victims in 2025 -- a 22 percent year-on-year increase -- citing rising living costs, debt, insecure work, conflict and AI-enabled digital recruitment platforms as the main drivers. And the Foreign Office sanctioned 35 individuals and entities involved in trafficking vulnerable migrants to fight for Russia in Ukraine and in supplying components for Russian drone manufacturing; the targets sit across human-trafficking networks and procurement chains feeding Moscow's UAV programme.