After the Ukraine invasion, hundreds of people found themselves stranded in Calais as they tried to navigate the UK visa process. It put a spotlight on the city where many young refugees have been living outside all winter in harsh conditions, while NGOs struggled to provide the most basic services. The UK has given millions of pounds to France to try to prevent border crossings but people continue to attempt to get to Britain.  Meanwhile, the residents of Calais complain of an increasingly militarised city. The Guardian's Maeve Shearlaw and Christopher Cherry report