Would go a classic navy and cream , with rich gold accents, like this pic but reverse the wall colour and lounge colour, and with your English lounge choice and decor, it would look refined and classy. The navy would go well with your grey/taupe carpet and the walls, and your window design would lend well to the old Victorian/English style. Just one idea to consider :)

If you have a bit of storage space then consider buying a couple of inexpensive easy wipe stackable chairs (eg ikea) for visiting kids to use. Parents and you can then relax and enjoy the meal without worrying about your upholstery. Alternatively, tie-on seat cushions will give some protection plus a height boost for little ones.

I have white fabric chairs and have had luck with Magic stain remover for fabrics, test on a patch under the stool first just to be safe, once dry , treat with Scotchgard to repel stains,this has saved my chairs, both available at Woolies.

Hi again everyone and thanks again for all your suggestions re my chairs. So to update....7 months later I finally have my chairs back (between the polisher and the upholsterer it took much longer than anticipated). I ended up choosing a textured blue velvet, not a navy but a mottled royal blue similar to my little painted bookshelf. Im glad I did as the frames turned out darker and much more orange tinted than I wanted so thankfully the blue fabric tones the orange down somewhat (the polisher was supposed to do a test patch first for us to see...but annoyingly didnt and just went ahead and finished them before we'd confirmed the timber colour was okay to proceed with) Bur overall Im pleased with the result as I didnt want to be TOO safe and thankfully the textured fabric does not look like a solid plain colour - I ended up ruling out any patterned fabric as although I did get some patterned fabric samples I felt they just didnt really work with the rest of the patterns or decor in this area, or do justice to the chairs, and I find the blue chairs with the blue cabinet create an interesting little colourful 'nook' (especially when teamed with my old persian rug) in an otherwise very neutral coloured, large airy space that compliments and brings together the splashes of blue and the similar coloured full-room sized persian rug in the opposite part of this open plan living/dining room. Also my vintage Liberty fabric cushions which I was adamant on using compliment the colour perfectly, so thats a win! But thanks again everyone for all the helpful comments