As the title suggests, the reptile in question is the Wall Lizard, a reptile that is native in Jersey, but one that was released in the UK. Ventnor is a "hotspot" for this species and is found in good numbers in this part of the island, a particular hotspot being the Ventnor Botanical Gardens. More details about Wall Lizards can be found here.
Jayne and I saw our first lizard on our first day in Ventnor, with one sunning itself on a bench along the coastal path just below Ventnor Park.
Wall Lizard (Ventnor Park)
We then had a day in the botanical gardens and saw at least a dozen. The best area in the park for lizards, was the aptly named "arid area", which is in a very sunny spot. We did, however, see them in other areas. Here are a few photos.
Wall Lizard (Ventnor Botanical Gardens)