The forum is going to need more info before we can help. You need/should have a list of CEL codes indicating what is currently going on. Is your CEL light on? What did the tech say was the reason it didn't pass? How many K's on your car?
You may want to connect with those folks over in the UK - they would be more familiar with the MOT process. I believe it's Boxa.net ?? which is more specific to the UK.
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2011 Boxster 987.2 Arctic silver / Black leather, PDK with Sports Chrono Package Plus