"angusclaydon" wrote in message
news
I currently have a baxi bermuda 551 back boiler central heating / hot
water system. It has a gas fire on the front
which is no longer used.

snip

You do not have to have a condensing boiler if replacing a back boiler. My
mate has had his 1970's Baxi Bermuda with 70's style gas fire replaced with
a new Baxi back boiler and coal effect gas fire. Fitted by a Corgi installer
who totted up the "points" (major problems, no easy condensate drain and no
space for external flue not near windows or external doors) so a
conventional back boiler was fitted. Also converted to fully pumped in the
process. About £2.5k I seem to remember.