Some Iranian migrants including three minors, broke into the 12-metre (40ft) boat in the northern French port of Boulogne-sur-mer on Monday night.
The boat reached England early on Tuesday but the fishing boat believed to have been stolen from a port near Calais, British officials confirmed.
The French coastguard spotted the trawler taking a “bizarre” route across the world’s busiest waterway at around 9.30pm local time in calm seas.
Border Force officers arrested the migrants as soon as they reached the shore in UK in the early hours, according to a spokeswoman of the Manche and North Sea maritime authority.
The local surveillance and safety centre, Cross, at Cap Gris-Nez in the Pas-de-Calais phoned the owner of the vessel, who ensured his boat was stolen, and then contacted the maritime rescue coordination centre in Dover.
Till now this fall French maritime officials have launched 23 operations either to rescue migrants at sea or to stop groups about to set sail.
French authorities evicted 1,800 people previous month from a makeshift camp near the port of Dunkirk among them most are Iraqi Kurds.
> Shiuly Rina