Well if you believe that Joseph of Arimathea was Jesus' Great Uncle ...He was a Merchant involved in the tin trade between the West coast of England, and the Mediterranean, and he was a rich man as the Bible says... It all falls into place... Yes, Jesus could have gone to England.
Re: the Cloak
The fact that the cloak was seamless does not mean it was expensive. If it was the Jewish police who arrested him would have stolen it from him.
That cloak did have a great deal of sacred value... remember the story of the woman who was healed by merely touching the hem of Jesus' cloak. I am sure there would have been a lot of people that would have liked to have that garment. Maybe the Roman solders were just bored and that is why they cast lots for it or.. maybe they were instructed to do away with it so someone else could not take it and claim they were the risen Jesus.
Re: Mary and Joseph's money
The poor people of the day did not register for the Census, so they could be taxed. They ran away and hid. We know that Joseph and Mary registered in their hometown. So that tells us that they may have had money. Remember Joseph was a carpenter.
Re: Jesus and his disciples being poor
(Luke 9:13), Jesus first told the disciples “‘You give them something to eat.’ And they said, ‘We have no more than five loaves and two fish,
unless perhaps we go and buy food for all these people’”.
They obviously had enough money to consider buying food for more than 5000 people!