Posted: 21/05/2017 at 19:29
Sorry - I went out and didn't see your reply MMama!
I wondered if you'd meant the grout but then you mentioned it so I thought it was another area
You've had plenty of good replies anyway
It's also easy enough to do the grout yourself. You can buy ready prepared dry mix which you can sweep into the gaps after you've cleaned up the slabs and done whatever else you want to do with them. You then just leave it to draw moisture from the surroundings, or use a watering can to set it. I've done that before . The paving was laid on a thick layer of grit sand Will, and we had no problem, but it's one of those things that might need looked at once the cleaning's been done.
Alternatively, you could plant some creeping thyme, or similar, into the gaps, or remove the odd slab here and there and plant into it.