Replacing our bath

We need our bath changed, new for old. The bath is just inside the door and in the corner between the 2 walls. The walls are tiled so the bath needs to go under the existing tiles. We can supply the bath or you can. Also, minor changes (one-way valves on the H&C feeds). If the price is right, we would like this job done within the next few weeks but will wait for the best tradesperson to come along.