Top table!

Best man and maid of honour or chief bridesmaid would normally be an option there. The easy way would be to not have any parents there rather than leave one out. But that would mean not having yours there - although you did not mention about yours.

If you have Dad and he is doing a speech then your "get out of jail card" could be you are only having the speech makers on the top table and sit your Mum on the nearest other table seat to Dad.

Or have his Mum and Dad there as usually they don't sit together anyway - as his Mum would sit next to your Dad on one side of you and his Dad would sit next to your Mum on the other. As far apart as you can get them if you like

View quoted message I have decided against bridesmaids and if he has a best man I think it will be my brother so I don’t want it to look one sided with just my family , I definitely want my mum and dad there as we are both very close to them so my OH would agree , I don’t think my dad would thank me for sitting him next to his mum if I’m honest ?

Right then the other option is not to have a top table at all and just have a "sweetheart table" which is a table just for the two you. Which is what its being done right now with the covid weddings I have been photographing although they were actually already a "thing" before covid

View quoted message That sounds perfect! That way we aren’t picking and choosing , I’ll contact our venue and see if it’s possible ! Thank you !?

I have the same issue (my parents are divorced). Our solution is to not have a top table, and have us and our siblings at a table (we have one each). It’s quite nice for the partners of groomsmen, bridesmaids etc as well as they actually get to sit with each other rather than being one person sat with a bunch of people you might not know!