http://forums.moneysavingexpert.com/showthread.php?t=1301269&page=1
I would base my thoughts on them based solely on the reply given, apparently by Jack Russel themselves telling the OP they have had a cheque returned to them from the OP - how the hell do they know who the OP is?!
Laughable company just from that post alone
Further on, they have themselves been in court for non payment
Read at your leisure - this was the very first result when I type 'Jack Russell debt collection reviews' into google