score:11
Do you think I have enough time.
KLM thinks it's enough time, otherwise they wouldn't have sold you the ticket. A connection is never guaranteed but you have a very good chance of making it. If you don't KLM is fully responsible and will rebook you on the next available flight and may have to pay you delay compensation. Since KLM doesn't want to do that, they set the minimum connection times for a very high success rate. Amsterdam is their home base, so they have lots and lots of data to make these calls.
Upvote:8
I have connected from UK to Schengen and back at Schiphol quite often, including several connections in the 50min-1h range. I never missed a connection, nor came dangerously close to it.
The terminal buildings are rather compact, and getting around doesn't take long (provided you can walk briskly). If you are collecting from your plane by bus this shouldn't add much to your connection time.
You will need to pass through passport control. There are e-gates, but I've very rarely if ever seen them in use. If there is a long queue at passport control, they will open a fast lane for imminent departures.
While the 55min should be enough, a delayed departure from Oslo could easily get you into trouble. I had a flighs departing late for Schiphol because of bad weather in Amsterdam, leading to a 90min delay of my arrival there. That was on a flight with 5h connection time, but it could just as easily have happened on another one. Provided that you make your best effort to reach the departure gate on time, if you end up missing your connection, it will be up to KLM to provide you with accommodation and a seat on their next available flight to your destination. As Schiphol is full of KLM staff, it should be easy enough to make that happen.
In your shoes I would be unconcerned about the connection, UNLESS it is vital that I arrive at Bristol on the expected date. In that case, just flying a day earlier might be the fix.