Please be aware that landlords can demand annual rent being paid upfront in one go (that's potentially 200k AED equivalent up front) or in 4 post dated cheques sometimes. Depending on whether your company pays direct or will be willing to give an advance or whether you have your own cash funds (risky) it makes the world of difference as to how stressful it can be. Different people experience their Dubai very differently even based on this single point alone.
Please also familiarise yourself on the concept of post dated cheques and the risks involved which is probably alien to you. Loans are not a good idea, and banking does not work the same way as in the uk. If you do go to Dubai, I recommend to keep the banking simple.
There will be agent fees to pay (5% of annual rant?), rent deposit to pay (2 months rent) upfront. Plus DEWA deposits, and other utility deposits I can't remember. So would suggest you either run your figures and assumptions past the ladies on EW (the are pussy cats really) or ask them more up to date info on set up costs. Utilities costs are very high, and varies depending on whether you live in a condo or villa. There's also multiple school registration fees to pay.
You will also need bags of patience and not expect the same level of efficiency you are used to.
Just be careful that what looks like a good package really isn't by the time you take into account of rent, school and cost of living, although this depends on your goals and whether you expect to save.
If you have a house in the uk, rent it out, don't sell it to fund your adventures.
All the best. And good luck.