Cheapest iPad data sim

[pioneer2000]

Recently had my t-mobile £10 pay as you go sim run out (the one that meant £10 covered the entire 12months).

Started tethering my 3 pay monthly contract iPhone to my iPad to get online but now they've blocked my sim saying tethering isn't allowed on my contract.

What's the cheapest sim I can get for iPad data? Preferably at least 1gb a month.

 

[Sho]

http://ovivomobile.com/offer/ovivo-for-data/

Uses the Vodafone network.

As for the cost, 500mb free every month ot 1gb for £5 a month

And yes My Mrs uses Ovivo. No issues whats so ever.