Many teachers find that although they enjoy teaching they get dissatisfied with the amount of paperwork and data that is required to be produced on a regular basis. Supply teaching could be a viable alternative as it fits in better with family commitments and also gives the flexibility to work the hours that you want to.
It could be the case that a school that you have previously worked in will consider using you as a regular supply teacher. This is excellent as you will know the school routines and staff making the role easier. If this is not an option then there are teaching agencies that will be able to provide supply teaching positions quite easily. Many local authorities will only accept supply teachers who are signed up to an agency, but sometimes smaller schools are more flexible in their approach. Agency work may result in slightly less pay but you may be guaranteed regular work if you want it.
In preparation for being a supply teacher it is sensible to have on hand work that you could set for pupils across the age range that you are prepared to teach as although in most cases the class teacher will set work for the class in emergency call outs it is better to have your own resources to call on.