Bet McLean are offering £10 Risk Free for customers who have NEVER used the games section at Bet McLean before. You’ll need to complete at least 20 games to qualify for the refund. You can use any slot.
I would personally do 20, 0.50 spins first, to ensure I would qualify for the refund. I would then attempt some higher stakes in an attempt to hit a win that I am happy with. I would expect to make a minimum £10 profit or hit the refund before I stop spinning.