Originally Posted by Scott Pilgrim

There is an Instrument Approach Procedure to both ends of the northern runway at Gatwick (excluding SRAs), in the form of an RNAV approach.

For those interested the approach plates are here and here.

SRAs aren't rare, they are available on request, though most aircraft these days would probably fly the RNAV approach to the northern runway.

(I did Gatwick approach, in addition to Heathrow, for a number of years. Nowadays I don't 'do' it but do supervise it.)