yes same pro-rata i got just over £70 but the ap wasnt high.
i think £500.
when i rang to get permission to change they told me straight away what the figures were so theres obviously something they look at that tells them what the pro-rata is. they even gave me a date that it went down to the next level cant quite remember the details but they said if i got the car before end of march it would be £400 gcb and £70 ap after that it would go down to x and y but i had already worked out which car i wanted and the dealer had a £500 off offer so i ended up with nothing to pay.