To be honest i'd just pay for a scenery package, for 15 pounds its worth the initial cost if you can't find a decent freeware package. Have a look at http://www.justflight.com
They have 2 which include Manchester, one has other international airports too, the other includes all the main UK airports and the EGCC scenery is superb! Online ordering aswell, so its pretty simple.
If you need anymore help feel free to contact me