Ah, but you didn't use the magic word "instrument" before approach did you.
If you don't want to spend money on Aerad (which is horrible anyway, go with Jeppesens), you can buy the RAF's plates much cheaper from
http://www.aidu.co.uk/ Very user friendly and the South of England book is £11.60 one-off, £1 for a single plate or £46pa for a subscription, but they don't list Goodwood either.
Maybe you should just phone them and ask.
P