Hi Andrew,
Best option would be to for some H&R or VWR lowering springs. They will drop the car between 25-30mm so you will be fine with speed bumps still and it won't be too crashy or anything so still ideal for daily use. In fact, most people who have them fitted usually say it feels a lot better, not as bouncy and absorbs bumps a lot better. Plus the benefit of less body roll so it will handle considerably better as well.
We stock both here at AKS Tuning, more than welcome to chat through prices and options with you if need be.