Your moth is most likely a Riband Wave (Idaea aversata), they are typically variable in color but are usually more of a buff or yellow-ish color, but as mentioned variable. It looks a bit worse for ware, so I'm sure appreciated the safe harbour of your kitchen window for the night
Thanks for the prompt reply. It certainly looks a bit the worse for wear colour wise but flew off OK once the window was opened. It is somewhat backlit in the photo which may explain its "washed out" appearance.