Welcome JamieC... [smiley=thumbsup.gif]
While the Mokita hasnt been sold under that name for a few years, there are similar machines on the market now called Lelit which share some of the same components.
Perhaps if you send a PM to Site Sponsor Jetblack Espresso who now import the Lelit range, they may be able to help you out or advise on the course of action to take.
I used to own one of these myself and they are great little espresso machines so I can understand where youre coming from... ;)
All the best mate,