and then came Boris.
" The prospect of creating a tunnel between Northern Ireland and Scotland was raised several times in the 1960s, newly declassified files have revealed....
Project or alternative of a £209bn tunnel would be vastly expensive and fraught with complexities, study says.
https://www.theguardian.com/politics/2021/nov/26/johnson-plan-irish-sea-bridge-tunnel-rejected-official-study-expensive