Some more Chiltern progress to report.
Florence has advanced another 32m in the last week, and on February 12 was at 16004m, having passed the 16km/10 mile mark, and is 56m from the portal.
Cecilia is at 15595m, +118m in the last 6 days and with 495m to go.
HS2 Ltd posted an intermediate update for February 9 in the Northolt West tunnel, only 3 days after the previous one.
Shushila was at 3857m, an unlikely +122m progress in those 3 days, and Caroline was at 3427m (+86m).
Search our interactive In Your Area Map to find information about current or planned HS2 construction works taking place across the route.
www.hs2.org.uk