The only other Blue Peter MG connection I knew of was that MG Magnetite that was donated to be auction for one of their appeals. The buyer named it Blue Peter
OK next question
The theme tune is http://www.bing.com/videos/search?q=van+der+valk+opening&sk=&mid=A2C48B6D376911C32DEEA2C48B6D376911C32DEE&FORM=LKVR10#
Three questions....
1 What is the theme tuned called?
2 How high did it chart in the UK?
3 A mystery solving TV sleuth lives in a house that could well have come from the country the tv show is set in. What is his name?