Help with obtaining M2M sim cards in the UK for hobbyist use.

[jusanother]

Hi,

Has anyone got a any experience buying small quantities, (i.e one off) of M2M sim cards in the UK. I need one for a weather station project.
All the web sites for M2M cards seem to extensively contain industry waffle and general padding BS. No prices. I have only found one quoting prices: http://m2msecuritysims.com/uk-m2m-sim-only-data/ but they seem a little sketchy, TandC quotes different contract period to web site, paragraph numbers don't tie up, looks copy and pasted.

Any others people have used ? good, bad, ugly, etc. ? I only need around 1MB a month and the lower the cost the better (£1-2 GBP would be good). No calls, no text, just data.

I notice the new Spark Electron and may go for it if all else fails.

Thanks. Cam.