wrote:

Are there any Sim Only data only contracts which charge £10 or less
per month, allow laptop use, and have a 1GB+ data allowance?

What other options are there?

3 PAYG with a month of "Internet" addon: £5, with a 2GB cap. But not for
laptop use.

3 PAYG with a month of "Mobile Broadband" addon: £10, with a 1GB cap.