Where can I buy an ottoman bed with a solid platform rather than slats?

I’m trying to find an ottoman style bed where the lid sits on top of the frame, similar to these two examples:

[https://www.conforama.pt/sommier-madeira-wood-space-carvalho-160×200](https://www.conforama.pt/sommier-madeira-wood-space-carvalho-160×200)

[https://www.ikea.com/pt/pt/p/kvitsoey-estrut-cama-estofada-c-arrumacao-bomstad-branco-90448661/](https://www.ikea.com/pt/pt/p/kvitsoey-estrut-cama-estofada-c-arrumacao-bomstad-branco-90448661/)

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But for some reason the only ottoman beds I find in the UK are with slats that go inside the frame, such as:

[https://www.mattressman.co.uk/product/birlea-phoenix-ottoman-oak-ottoman-bed-p96331?vid=252648](https://www.mattressman.co.uk/product/birlea-phoenix-ottoman-oak-ottoman-bed-p96331?vid=252648)

[https://www.time4sleep.co.uk/products/molle-wooden-ottoman-storage-bed-frame-only](https://www.time4sleep.co.uk/products/molle-wooden-ottoman-storage-bed-frame-only)

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Does anyone know where I can find such a bed? They seem to be very easy and cheap in mainland Europe but for some reason I can’t find any in the UK, not even IKEA sells that item in the UK.

Main reasons are I’d like to have it sealed off so it doesn’t get as dusty in there, and also so that it doesn’t need those poles in the middle for support.