map showing the proposed railway line linking the High Speed 1 and High Speed 2 lines in North London, UK, enabling the Regional Eurostar services
<a href="//commons.wikimedia.org/wiki/User:Cnbrb" title="User:Cnbrb">Cnbrb</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>