i got the same dilema not so long ago.i didnt want to go into someone else round, but he isnt covering all area and there is lot of people interested in my service. dont be pushy though and dont try nick his customers as u wouldnt like if someone was trying to do it with yours.with conservatories its vary, i was pricing georgian one 2200x3400 for 40 quid with cleaning gutters and they were happy.
good luck