Problems have emerged in some of the 5,000 pre-cast concrete segments.
https://www.mirror.co.uk/news/uk-news/hs2-cost-rise-over-concrete-27792811
The faults have been found in the so-called 'Green Tunnel', with construction being halted amid fears that the work done so far may have to be destroyed, driving the cost yet higher
https://www.mirror.co.uk/news/uk-news/hs2-cost-rise-over-concrete-27792811
HS2 cost may rise yet again over concrete 'issues' as construction halted
www.mirror.co.ukThe faults have been found in the so-called 'Green Tunnel', with construction being halted amid fears that the work done so far may have to be destroyed, driving the cost yet higher