There are companies in Dubai that will manage your property whilst you are away. They ensure it is rented and maintained. I will be happy to advise on companies we recommend. This is quite a good option if you are planning on returning to the UK, or just want property there.
So far as buying goes, it's hard to say for sure. I, personally, am under the impression that it's better to live in Dubai for a while, and get a feel for the areas you will be most happy with. It will also give you enough to find out where the good quality building is, and the area with most potential.
On another note, there is a Lloyds TSB and HSBC here, although they share very little with their UK counterparts. For the most part, the usage of the brand name is more of a marketing and recognition tool. As an example, if you have a UK HSBC account, they will not be able to find any information out from here.