PWA,
Welcome to the Network. I sorely wish we, in the States, could start a parts exchange with you fellows across the pond. Some are finding that parts ordered from
www.subaruparts.com or 1stsubaruparts.com are less expensive (including cartage and customs) than what can be found there.
The warning lights flashing, in the older models, was an indication that your security system batteries were low, and it needed to be re-programmed. This feature was "upgraded" here in the states to avoid battery drain. If your remote batteries are still good, you may just try reprogramming the security system.
I too have the little "starting glitch" you've described, in my newly purchased 2nd SVX and it's beginning to show itself in my original SVX. I'm suspecting the contacts in the A/T shiftlock system. If you have the push button release above the shift leaver, you might try releasing the lock and running the selecter from P to N and back again on the first "Non Start" and see if it helps. Then, you can be almost certain of the cause.
Again, welcome. Come back soon and post often.