Acknowledgments
The authors would like to thank Network Rail, Natural England, and all those who granted site access for their invaluable help in facilitating this research. Thanks to all the media outlets who promoted our citizen science campaign, and to those who reported their lizard sightings. Thanks to Ellie Field, Joel Dixon, Hannah Grice, Miguel Martinez, Liz Cooper, and Jack Carney for assistance in the field. Steve Langham provided additional site details for which we are very grateful. We thank Dr Steve Palmer and Dr Greta Bocedi for their guidance and technical support in using the RangeShifter software. This work was supported by a Natural Environment Research Council Studentship to RJW (NE/L002574/1).
Author contributions: All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by R.W and L.MC. First draft of the manuscript was written by R.W, and all authors commented on previous versions of the manuscript.