ARP Tunnel Network K4 [????- ]

Thomas noted they'll be affected. I took a look at the EIA document, which confirms it:

4.7.2.24 Disused Air Raid Precaution at Chatham Road (Tunnel Network K4)
The tunnel (Figure 4.2.6) network K4 is located approximately 200m to the south of the SCL route alignment and HOM. The proposed construction method for the SCL will consist of drill-&-blast and cut-&-cover methods. Cut-&-cover will be the primary construction method for the rail line for KTE (another concurrent Designated Project) adjacent to the tunnel network.

The KTE EIA Study identified that the tunnel network in their present state will create an unsafe working environment for the proposed HOM works site. Portions of the tunnels would be filled up by mass concrete prior to the construction phase, and hence the tunnel network would be directly impacted by the proposed works from KTE Project.