No it's not just you, 40 mph seems to be increasingly a standard speed everywhere now, very irritating on the open road where much faster is safe. I know why this has happened in the South East where I live, it's because the very high frequency of coming into 40 limits has left drivers not bothering to change their speed, just sticking to it all the time. Due south of London down to and right across the Ashdown Forest is mostly 40 limit now, motorways excepted, so the drivers have a point since the few 60 limit areas and the vanishing 50 limit areas are almost too brief to bother with gaining speed.
This is why I sold my last motorbike after a lifetime of riding them, not enough legally faster road left to enjoy it.
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