Scientists have determined that tin ingots discovered off the coast of Haifa originated in Cornish tin mines over 7,000 years ago. Tin combines with copper to make a bronze alloy – hence the Bronze Age. The tin ingots were carbon-dated and the only tin mines at the time were in Cornwall.

https://www.timesofisrael.com/groundbreaking-study-ancient-tin-ingots-found-in-israel-were-mined-in-england/