I think that is highly unlikely that any vessels will be pushed back. It is just talk, down to the frustration of finding that there is no easy solution to the 'problem'.

Talk, talk, talk yet people continue to arrive by illegal means. Neither the French or Uk authorities have the means to patrol the coastline in order to catch the vessels as they set off. However, you might think that they have the means to target the gangs who are providing this service. Does anyone think that drug smugglers could act so freely?