what type of boiler can i have?

Hi, My Potterton Suprima 30- 100L. is 18 years old. seems to be running well (modified board was fitted 10 years ago ). with an external pressure tank. and hot water cylinder..But guess it's time to think about a new boiler..
question is. if I have a new boiler will I still be able to have a hot water cylinder ? I want to have a new bathroom with a power shower... any clues as to What type of boiler I should have and what questions to ask when I get guys in for an estimate ? ... hope your all well .. t/c

 

speak to an installer you will need your HW supply measured to get the best advice , you get different types of power shower they are not all the same