How much should I expect a bathroom refit to cost?

Swindon based. We’d like to remodel our 6.5m2 bathroom. - Replacing the tub with walk-in shower with plaster wall to be installed; - Fitting tiles around shower area and shower wall only (cca half of room, some of them limited in height); Please note, painting of the ceiling and rest of the room is excluded. - Removing the sink and installing new one on the other side of shower wall; - Move the toilet closer to the drainage outlet; How much should I expect this to cost, roughly?