It's probably not everyone's dream wedding but we managed to keep the cost down by just not giving a shit about details!
My mum drove us to the registry office in her people carrier, we didn't have any table dressings, chair covers, centrepieces etc, got married on a Thursday (cheaper) and had the night do on the Saturday.
Wore my mum's dress, did my own hair and makeup, husband bought a primark suit (knew it would never get worn again, 50 quid) had a friend take photos in exchange for food (not professional, just hobby), went to the local pub/restaurant and everyone paid for their own meals (I know this is a MN cardinal sin but I made it very clear well in advance and took no offence if someone couldn't make it).
Only had our 2 daughters as bridesmaids, got their dresses from TKMax, 20 quid each. Son didn't want to wear a suit so came dressed as iron man!
My dad got flowers and a dj as a wedding gift. He used to run a garden centre and was a dj in the 90s so has useful friends 😂
Me and my mum did all the party food ourselves, bought banners and balloons on the cheap from card factory. So the only things we actually had to pay for were official wedding costs, dress alteration/cleaning, a couple of outfits and room hire/food for the night do.
We got enough in cash gifts to go to our favourite city for a couple of nights so that was our honeymoon (wasn't planning on one originally)
Just depends what you want out of a wedding, its doable on a very low budget but it's not fancy.