A complete list of introduced species for even quite small areas of the world would be dauntingly long.
This list is generally for established species with truly wild populations— not kept domestically, that have been seen numerous times, and have breeding populations.
Further information can be found at the GB non-native species secretariat,[59] which has a free tool kit of resources on non-native species, including a photo gallery, ID sheets, risk assessments, projects database, case studies and resources for local action groups.
Primary source for this list is Nonindigenous Aquatic Species Database[196] unless otherwise stated.
Marine[196] Freshwater[196] Terrestrial [385] [386] [386] [424] [386] This is a non-exhaustive list of some of the more significant plant species