With regard to work, I would just keep working as a UK resident so could use the UK legal system if needed. All my clients are UK based. Of course I realise that would mean paying tax in the UK but that's ok as this would be a short term relocation to test the water, around 3 months.
I've no idea about the airport, most people tend to drive to Hatta (4 hour round trip all in) and back. It can be fairly easy to find a car share if you don't drive yourself. You can do this indefinitely and I've heard of people doing it for 4-5 years. Laws can turn on a sixpence here and that's not to say they won't introduce a limit on some random persons whim. Hasn't happened yet though.
As for working. I meant if you took on work while you were here, as I'm guessing that's why you're coming out. It's illegal to work on a visit visa but the reality is people do it while building their customer base and getting their name out there. You're looking at 20,000 AED per year to set up as a minimum so nobody's going to do that without a few clients behind them first. Less scrupulous companies actually make their full time staff do visa runs too
Like I said, if you do go this way you'll have no rights with regards to any contracts and many of the larger companies won't hire subcontract unless the are actually registered. That said even if you are registered there's little legal protection and if some wants to fck you over and not pay you, they will anyway.
If you've actually no intention of working here and just want to keep your UK client base but work tax free then it's not an issue. And good on you, I read an article in the indy yesterday about how practically every single high street store pays SFA while Cameron, Boris and the other clowns just get worse and worse running the country into the total ground.