My Father has recently joined my husband and I here in Dubai after my Mother passed away. Do you know of any senior clubs or groups he could join to be a little bit more active and meet people .

I do not know of any senior clubs however a good way of meeting people may be to volunteer for one of the charities (see article) or joining the Dubai Natural History Group who host monthly lectures and go out on field trips (a great way of discovering the UAE).  There are many hobby groups such as art and photography classes that also exist which are open to all age brackets.