[XPD](http://www.xdp.co.uk/)'s registed office is Sutton Coldfield.
Or [maybe](http://www.xdp.co.uk/track.php) it's Tamworth?
You won't have bought via XPD, more likely you bought from some vendor who happens to use XPD.
You should have a receipt form them and if the item is late, contact them to chase it. Your contract is with the vendor, it's their problem to resolve.