Yes, we did this just last Summer.Had the bathroom gutted, bath taken out, a double shower cubicle( the curved type, so no sharp corners to fall over) fitted with a rainfall type shower in it, moved the sink to under the window, so more light with fitted cupboards under and around it, and new toilet fitted with a push button flush and in a neater style.Bathroom looks much bigger as a result.Use either a reputable plumber who can show you pics of bathrooms he has already done, and do the design and choosing of the materials yourself ( we did this) or choose a bathroom design place to do it all for you.