Perhaps a really daft question.... but how do they know that you overstayed ?
Did the Swedish immigration people put an exit stamp in your passport ?..
... and point out that you had overstayed ?
I know a number of people who have overstayed their visa in the UK, BUT the
passport is NEVER inspected on the way out of the UK.
..... so it's only the entry stamp (the date) back into the Philippines that needs
to be explained