Northern line extension
... that the tunnel boring machines that dug the London's new Northern line extension were named after the first British astronaut Helen Sharman, and British aviation pioneer Amy Johnson?
... that the <a href="./Tunnel_boring_machine" id="mwBxc" rel="mw:WikiLink" title="Tunnel boring machine">tunnel boring machines</a> that dug the London's new <b id="mwBxg"><a href="./Northern_line_extension_to_Battersea" id="mwBxk" rel="mw:WikiLink" title="Northern line extension to Battersea">Northern line extension</a></b> were named after the first British astronaut <a href="./Helen_Sharman" id="mwBxo" rel="mw:WikiLink" title="Helen Sharman">Helen Sharman</a>, and British aviation pioneer <a href="./Amy_Johnson" id="mwBxs" rel="mw:WikiLink" title="Amy Johnson">Amy Johnson</a>?