Spot removal - dry clean only suit

Wilkinsons sell a dry cleaning stick for just this purpose. I think it's called Dabitoff? Other than that you could cover it with a funky brooch?

it would really help if you knew what caused the stain, then we could give suggestions on how to treat it - a rough guess on what you were doing when you got the stain, ie. if at work, could be tippex, or outdoors bird poop, etc.

really, if its not shifting with just water, then it prob is grease based

you can buy home dry cleaning kits for a couple of quid, that you put in the tumble dryer, but they are more for refreshing fabrics, rather than actual cleaning

depending on how old the suit is, and how much wear it has had, i would risk washing it myself at home, on a cool wash, light tumble, and then a good steam iron

ive yet to ruin any dry clean only clothing, by doing the above - i just think with alot of clothing they do it to cover themselves, as sometimes with suits the lining and outer fabric have different contents, and can shrink at different rates, so sometimes the lining ends up a bit puckered, but a good iron usually sorts that

or try a stain remover like Vanish bar, dirt devils or shout

Try dabbing it with a baby or face wipe. I removed tomato sauce from a white top with a face wipe.

I was going to suggest the felt tip trick as well, but you need to be careful. Ink has a funny habit of sticking fast to fabrics you dont' want it on, but shifting miraculously from fabrics you DO want it on. If you do use the ink method, do it VERY gently with a cotton wool bud and spot test first to make sure you get a good match.