Thanks for the responses guys.
Shark/Sail hack/Meggsie: Not an I.R but close. Marine Dept on a rig. Spot on about the big bills but thats not hard these days. If you have worked offshore for a while you would remember the ups and downs. Getting laid off every couple of years is the norm for guys offshore as different companies bring rigs in and out of the country. They generally lay everyone off when they depart. One of the reasons i would like to start a small business is to have something ticking along on the side if i ever get laid off and stuggle to pick something else up. Certainly not looking for fulltime work on my time off. Just want to have a plan B. Not just for me but the family. I can happily live in a van but not with them at same time!!
Landyacht/Gizmo: Home handyman sounds good as I would have most of whats needed to start up. A couple of small adds would likely keep it tooling along with the ability to latter spend more on advertising to generate more work if required.Plus nothing goes stale. I have renovated a couple of houses and yachts and so am relatively competent over a range of areas. I guess if you get a job,go look at it and if its beyond your skill set you just say so and move on.Or refer to a "training" website such as
http://thereifixedit.com/ 
Meggsie: Not real keen on staying at primary job as a second job. Either are my employers....something about double time /half the effort . Plus for reasons up the top.
Carrantoc: Too funny !! I will take on the bit about double the size of the add and may move into
removing
insulation. I hear its a growth industry.
Looks like I am a handyman.
Anyone want a squeeky hinge attended to??
Taking bookings!!!