https://github.com/bbc/programmes-pages-service/blob/master/src/Domain/ValueObject/Pid.php#l14
^[0-9b-df-hj-np-tv-z]{8,}$ HTH. -- James Scholes http://twitter.com/JamesScholes _______________________________________________ get_iplayer mailing list get_iplayer@lists.infradead.org http://lists.infradead.org/mailman/listinfo/get_iplayer