Hi James,
Your photo is quite blurred, but I would hazard a guess that the one on the left in the blue pot is one of the Ficus Benjamina types - if you remove a leaf does it bleed white sap that turns sticky? if it does then that is most likely what it is. Yes, all ficus like water, but not too much or you may get root rot - especially in UK (I live in a part of Australia where we do need to water every day). Benjaminas respond very well to trimming and as you are coming into your summer, you should be able to completely defoliate it, but cut all the leaves off and leave a bit of the stalk, don't just pull them off. When the new leaves shoot the old stalks will drop off on their own. You may be able to do this twice in the growing season - we can do it here 5 times a year with no ill effect, and the leaves will get progressively smaller. I have eleven different types of Ficus and all are excellent to work with. Don't know what the one on the right is, but if you can post a clearer photo we may be able to better help you. Hope this info helps. If I can help further, send me a pm
Taffy