It all depends upon whether you are looking for something interesting that also pays the bills a bit, or to replace a full time employed income. If you are just bored with what you are doing why not do something else, but still be employed? If you fancy opening a tea room, go and find a job working for someone else to see if it is for you. Be warned, there are pluses and minuses of working for yourself, especially if you employ staff. Some people have a portfolio of jobs, two or three part time jobs thus have a bit of variety, I have a couple of people working for me ( cleaning) who also have their own hairdressing/beautician business, my job gives them some financial security. Even HMRC have woken up to the fact that people have more than one employer or are a mixture of employee and self employed. But, make sure you get an accountant to sort it out for you, and make sure you pay NIC, it is too easy to slip through paying nothing with several jobs below the NIC threshold, small savings now but great losses when it comes to claiming your retirement pension.