In the UK, the role of a childminder offers a career path that requires certain professional qualifications and a continued commitment to learning. There's no quick, informal entry into the role. Anyone working for more than two hours a day, and working for reward (ie. payment or in return for other services) must register with their local authority and will be subject to OFSTED inspections to ensure the quality of your childcare provision.
There are no qualifications required before you can apply to register as a childminder, but you must undertake certain training before you are allowed to operate, and you will have to gain a paediatric first aid certificate.
In addition to having to train for the role, if you operate from your own home then you must also work to make your home suitable for bringing other children inside. You will need to buy toys, safety equipment and you must buy insurance to cover your services. You are not required to make your entire house safe for children, but you must secure any areas where children will be, including routes to bathrooms.
Some local authorities offer grants to help with the start-up costs of becoming a childminder so see if you're eligible for help.
If you are considering becoming a childminder then contact your local authority as early as possible. Entry into the profession isn't necessarily rapid, so the sooner you register your interest, the sooner you can comply with the requirements and start your business.