Invasive Species Action Plans are used to help coordinate the response to key invasive non-native species across England, Scotland and Wales.  The plans provide a short and strategic overview identifying the key aims, objectives and actions.

ISAPs are developed by stakeholders and coordinated by NNSS.

Species:	Date published:	Comments:
Ludwigia grandiflora (Water Primrose) (PDF)	31-8-10	After considering the threat that Water Primrose poses to economic and biodiversity interests, the Government has decided that management of this species should be carried out.
Pseudorasbora parva (Topmouth Gudgeon) (PDF)	15-03-13	After considering the threat that Topmouth Gudgeon poses to economic and biodiversity interests, the Government has decided that management of this species should be carried out.
Vespa velutina (Asian Hornet) (PDF)	2012	After considering the threat that Asian Hornet poses to pollinators, biodiversity and human health, a contingency plan has been developed to facilitate a response to this species if it arrives in GB.
Threskiornis aethiopicus (Sacred Ibis) (PDF)	Feb 2014	After considering the threat that Sacred Ibis poses to biodiversity, a contingency plan has been developed to reduce the risk of this species establishing in GB.
Corvus splendens (Indian House Crow) (PDF)	Feb 2014	After considering the threat that Indian House Crow poses to biodiversity, a contingency plan has been developed to reduce the risk of this species establishing in GB.
Non-native crayfish) (PDF)	July 2014	After considering the threat posed by a number of non-native crayfish species, an ISAP has been developed to help coordinate strategic action on these species in GB.
Hydrocotyle ranunculoides (Floating Pennywort)	Under development	The GB Programme Board for non-native species has asked that an invasive species action plan be developed for this species.
Myiopsitta monachus (Monk Parakeet)	Under development	After considering all the known facts on the threat that monk parakeets pose to economic interests and taking a precautionary approach to any potential threat to biodiversity, the Government has decided that management of this species should be carried out.
Dreissena rostriformis bugensis (Quagga Mussel)	Under development	A contingency ISAP for this species is currently being developed.
Lithobates catesbeianus  (American Bullfrog)	Under development	After considering the threat that American Bullfrog poses to biodiversity interests, the Government has decided that management of this species should be carried out.
Didemnum vexillum (Carpet Sea-squirt)	Under development	An ISAP is being devleoped to help coordinate action to slow the spread of this species.