Personal bad experience deposited £100 with this site was on £3 a spin 4k drops on sparta bonus within £15.
However all my winnings were cancelled and they refused to pay as unknowing to me they automatically put a bonus (£20) on deposits with no option to accept or decline they then have a bet limit of £2.50 max when bonuses are active just a word of warning.(this was a year ago so they may have changed since then)
i understand bet limits and bonuses but putting a bonus that you dont know your going to get then start playing and not notice it get added is a bit of a con.