The coldest winter for thirty years has delayed the usual appearances of amphibians and reptiles, but the more recent warm spell means that everything is happening at once.
Amphibian and Reptile Conservation (ARC) workers and other amphibian and reptile enthusiasts are reporting that common frogs are appearing and spawning all over the country. Common Toads are starting to migrate to their spawning sites in many locations. Adders have been seen throughout March. Even the late risers are on the move. The first sand lizards have been recorded and the first pool frog in Norfolk was seen on the 17 March.
If your thoughts are turning to things amphibian and reptile, then note that NARRS training courses are planned for this year http://www.narrs.org.uk/Documents/TRAINING_FLYER_17-03-10.pdf.
If you can't get that involved, you can visit http://www.herpetofauna.co.uk to report any amphibian and reptiles you see. You can find an identification guide there and, of course, plenty of photographs can be found on the ARC website.