# UK spending watchdog investigates Lower Thames Crossing

The UK's National Audit Office will investigate the Lower Thames Crossing, a major road tunnel project under the Thames. The probe follows concerns over escalating costs and value for money. The findings could influence the project's approval and future spending.

**Importance:** 3/5

## Sources

### Business
- [The Guardian Biz](https://www.theguardian.com/uk-news/2026/jul/12/public-spending-watchdog-investigate-lower-thames-crossing-project) — Sun, 12 Jul 2026 07:00:11 GMT