Andrew wrote:
Although according to the Octopus website you cannot switch
straight onto this tariff. You need to switch to Octopus
first, make sure you have a Smets2 meter or a 'secure SMETS1'
meter (whatever that is) first and sign up for direct debits.

That's common across all suppliers. The supplier 'owns' your meter, so you
have to be their customer before they can schedule a replacement meter
installation. That's why they switch you to a temporary tariff until they
can install one. In most cases the rate is the same as the smart tariff
you'd end up on if it's a flat or E7 tariff, but in this case there's no way
to do the Agile tariff without a smart meter so you get put on something
else until your meter installation.

Theo