Help! Need a 12v switched accessories feed?

[geraintthomas]

I used to have a CDR23 radio so there's no switched feed in the loom. I'm also in the U.K. so I don't have the unused telephone connector in the centre console.

I've installed a new radio and need a 12v feed that's live with the first click of the key in the ignition. The wire that I'm currently feeding to the radio is only live when the ignition is fully on, which means the radio won't work with the engine off and the key in its first position - like a normal radio.

Is there a feed I can tap into the fuse box that's live on the first key position, and not just the second?

Thank you!