There are multiple things which need clarification in your history- whether you had jaundice before surgery, was it a difficult surgery and how long did the surgery last, was an abdominal drain placed and did you have fever or chills associated with the elevated
liver enzymes.
This could be very well be a case of a passed out gall stone and you might just need monitoring for the same if your MRCP is clear.
Next Steps
Your MRCP report and films would be helpful.
If you have no symptoms, a repeat
LFT after 2 weeks is advisable as the elevation you observed in the latest report could well be part of the decreasing trend in LFT.
Health Tips
Watch out for visible jaundice( yellow eyes, deep urine), itching and change in colour of stools and any fever or chills