Delay compensation advice

Gmacr

My wife and I travelled this week with klm on a San Francisco to Glasgow flight via Amsterdam. On the morning of the flight (Tuesday) I got an email cancelling the Amsterdam-Glasgow flight and putting us on an Amsterdam-Manchester then Manchester-Glasgow flight. It meant we arrived in Glasgow at 5.30pm instead of the scheduled 12.40pm of our original flight. Should I claim for this ? And if so, is it only the Amsterdam-Glasgow leg that I claim for. Any advice would be welcome. Thanks.

Caz3121

Read Vaubans guide, post on the KLM thread
What was the reason for the cancellation?

Gmacr

Thanks for advice. I'll read the vauban guide. No reason given by KLM in their email or at the check in desk for the cancellation.