Hi Sacha
I contacted Mr Fizz in October last year by email its not too far to go for me only difficulty is that his filling station is not open on Saturdays so it would mean 2 trips a week apart, the FE's need to be within test date.
Not so bad if there are 2 or more to fill I suppose, currently have 4 empty 2kg FE,s 2 in date and 2 not, 1 on the go and 2 in reserve.
Looks like I'm starting to get an FE obsession.