I had read this before on some site and just saw it again today in the Guardian film summary and realised that it must be true.
According to the story:
…reunites their cardigan-toting, crime-busting alter egos on the mean streets of London.
Apparently they will be in the starring roles, here’s hoping that the chemisty that made the series so great in the first place has endured everything that these actors have faced in their lives. Lord knows they’ve both been through some very hard times since their rise to fame. Could it work?