Dual bin 30l bin liners

[KinS24]

Boring question alert.
I have the Brabantia twin bin with two sections for rubbish and for recycling. Both take a 30l bin liner.

Brabantia do a ‘perfect fit’ liner which is great but they’re expensive (£30 for 120). I used to get some ‘tall pedal bin liners’ from Tesco but my branch has stopped stocking them.
I have tried several off brand 30l bin liners but they’re very wide and hard to tuck in and end up spilling stuff when I empty them.

Need narrower liners and would ideally get some recyclable ones for the recycling half so I can chuck that stuff straight in the big recycling bin.
Anyone got similar bin and have any ideas?
Thanks

I have bored everyone to silence! I will just get the brand ones but hate throwing away 25p with every load. They fill up so quickly in our house.

Ocado have them, usually on sale for £5 for 40. I used to like Wilko ones, they are still on the website but always out of stock.

The Range are selling Wilko bin liners, £1.29 for 20 bags.

Amazon have 30l bin liners - I have 4 Ikea bins in a drawer in my kitchen and these work well - they also have compostable 30l liners for thenfood waste bin