Tracey wrote:

My British gas smart meter display unit won't stop beeping. It's a pay as you
go meter but has plenty of credit. The constant chirping is driving me mad

If it's the in-home display beeping, either power it off/on, or move it
to be closer to the electricity meter.

If it's the actual gas meter beeping, they have a battery that should
last 10 years (not user replaceable).

Other than that, call British Gas ...