I 'retired' at 59 as I had my MoD pension and another pension coming at 60. However after 18 months I was offered something which interested me and the cash was OK. Seen the project through for 5 months However I got clobbered with higher rate income tax etc. So set myself up as a consultant with a limited company, got an accountant (doesn't cost a fortune) and off I went. I'm fortunate as IR35 doesn't apply to me, all my work is 'overseas', although 95% of it is from home. I do a few hours a week, generally around 4 days a month unless they need me to go on site somewhere, in which case it'll be however many days (usually 3 - 5) which really hikes up my income as I'm not cheap. So far I've worked in Holland, Kuwait, Indonesia (few trips out there), Qatar and now Dubai (did work there for over 4 years), next month 3 days in Istanbul, July 5 days in Madrid. I only take on projects that interest me and people who employ me want my specialist knowledge and skills for a few months or a couple of years but very part time, they've no interest in employing anyone full time just for a few weeks of work. Besides which they need experienced people with a narrow skill set so they're content to pay top dollar.