You could use a series of conditional fields e.g as follows. Use CTR+F9 for the bracket pairs and press the enter key where you see ¶

{ IF { MERGEFIELD "Field Name 1"} > 0 "Field Name 1: { MERGEFIELD "Field Name 1" \# "£.0"}¶
"}{ IF { MERGEFIELD "Field Name 2"} > 0 "Field Name 2: { MERGEFIELD "Field Name 2" \# "£.0"}¶
"}{ IF { MERGEFIELD "Field Name 3"} > 0 "Field Name 3: { MERGEFIELD "Field Name 3" \# "£.0"}¶
"}

__________________
Graham Mayor - MS MVP (Word) (2002-2019)
Visit my web site for more programming tips and ready made processes www.gmayor.com