British Isles Exotic and Introduced Amphibians and Reptiles

This species is also native to the channel islands, but its presence on the mainland is much more widespread. Colonies exist in Ventnor, Bournmouth, Shoreham on Sea, Ludlow and Haywards Heath. Portland and Purbeck have several colonies each.

There is and italian subspecies which is green backed found in Ventnor and Bournmouth, the nominate form which is brown backed are found on Portland.

Present only in an around the grounds of the Welsh mountain zoo, Colwyn Bay, from where it escaped. This as the story goes happened in the 1960's where one gravid female escaped and the population has all come from this one source. The population is well over 100 individuals and they are found upto 0.5 miles from the zoo. Another smaller population is established at London zoo.

Escaped from garden in Kent and colonised Romney Marsh, it has spread north and west into Sussex, London, Essex and Norfolk. From a few individuals in the 1930's it now has a considerable population.

This frog was first introduced to the UK in the 1830's and at various times since. It is present in Surrey, Essex and Middlesex and is slowly spreading but is very much an aquatic species.

Originally imported as pets, releases led to breeding in the Kent / Sussex border region, this colony has been removed and the few others that exist are being controlled.
This species is a menace and needs to be reported to the local Amphibian and reptile group.

Used in research, escaped and deliberate releases led to several colonies notably in the Isle of Wight and South Wales, where the only major colony still persists.

Deliberatly released it has formed small but stable colonies in several parts of the country notably Shropshire and Surrey.

Again deliberatly released into several areas colonies in Surrey and Birmingham persist.

Deliberatly released it has formed very small colonies in several parts of the country

The Midwife Toad was originally introduced into Bedfordshire in the early 1900's, it has persisted and spread. Other populations also exist in other parts of the country.

Released pets have formed this population, it is not certain if they are breeding but numbers are stable possibly due to continued introductions and longevity of individuals. They can be found in the south of England mainly in slow flowing rivers.

The Norfolk broads holds a small population.

Released pets have formed this population, it is not certain if they are breeding but recent finds of eggs combined with the recent warmer climate make this a matter only of time. Current numbers are stable possibly due to continued introductions and longevity of individuals.

They can be found in the south of England particularly in parks and gardens.

Small populations existed in Dorset and the Isle of Wight, two larger populations persisted until recently in London and the New Forest where a small population still survives.

Several small populations have existed and may still do in London and Devon.