From Bond:
A statement read: "Following an issue with the fuel indication system on one of our aircraft yesterday we temporarily suspended service operations whilst we undertook further technical investigations of our fleet of EC135s."
It added: "We will continue to work with the manufacturer Eurocopter on any aircraft which are found with this fault, with the aim of resuming normal service as soon as it is safe to do so."
From which, as they had previously said there was no linkage between the Glasgow incident and this suspension of all their EC135s I presume the former is not considered fuel quantity related?