Passed PLAB 1 EXAM !! 
My preparation (around 52 days).
I did PLABABLE.com (twice)
and PLAB1KEYS.com (Twice)
Scored 139
plabable is the primary source for plab 1 exam.
plab1keys is a new wonderful platform that helps you master plabable and save time as it presents great notes, summaries, comparisons in absorbable ways with a stress on the critical topics and points.
each of these 2 sites costs 20 pounds for 3 months. I would highly recommend you subscribe both sites for the max benefit.