New heating system

[RoboCod]

Sorry to hijack thread but have a question. Is there any options where you can keep a conventional boiler and hot water cylinder but get rid of the tank in loft. would love to boil the loft for storage.

Wouldn't want a combi as don't want to loose pressure when more than one tap goes on or the bog flushes.

It won't necessarily lose you pressure. You're best having an engineer out to check how many litres per minute your water flow is, then he'd advise what combi and how much pressure etc.