Three now have tethering available for the iPad 3, which can be read in the comments by moderators on the official post.

Three have many pricing strategies available but what is the full cost over the contract term? For analysis I have assumed that pay monthly contracts would also be kept for the full 24 months.

iPad Storage	Upfront Cost	Monthly Cost	Data per month	Total Cost	Comment
16GB	£479	£7.50	1GB	£659	upfront £20 cheaper than direct from apple
16GB	£479	£15	10GB	£839
16GB	£159	£25	15GB	£759	Save £320 upfront
16GB	£99	£29	15GB	£795	Save £60 extra upfront
16GB	£399	£18.99	15GB	£854	iPad (WiFi) + MiFi

iPad Storage	Upfront Cost	Monthly Cost	Data per month	Total Cost	Comment
32GB	£549	£7.50	1GB	£729	upfront £30 cheaper than direct from apple
32GB	£549	£15	10GB	£909
32GB	£229	£25	15GB	£829	Save £320 upfront
32GB	£169	£29	15GB	£865	Save £60 extra upfront
32GB	£479	£18.99	15GB	£934.76	iPad (WiFi) + MiFi

iPad Storage	Upfront Cost	Monthly Cost	Data per month	Total Cost	Comment
64GB	£629	£7.50	1GB	£809	upfront £30 cheaper than direct from apple
64GB	£629	£15	10GB	£989
64GB	£299	£25	15GB	£899	Save £330 upfront
64GB	£249	£29	15GB	£945	Save £50 extra upfront
64GB	£559	£18.99	15GB	£1014.76	iPad (WiFi) + MiFi

Orange, Vodafone and [O2][] Prices:

Service Provider	Size	Upfront Cost	Monthly Cost	Data per month	Comment
Orange	16GB	£139	£25	2GB	Ipad 2
Orange	32GB	£249	£25	2GB	Ipad 2
Orange	64GB	£349	£25	2GB	Ipad 2
Orange	NA	NA	£10	2GB	Monthly Rolling data only

Service Provider	Size	Upfront Cost	Monthly Cost	Data per month	Comment
Vodafone	16GB	£199	£27	2GB	£15 per extra GB
Vodafone	16GB	£499	£15	2GB	£15 per extra GB
Vodafone	16GB	£499	£7.5	0.5GB	£15 per extra GB
Vodafone	32GB	£275	£27	2GB	£15 per extra GB
Vodafone	32GB	£569	£15	2GB	£15 per extra GB
Vodafone	32GB	£569	£7.5	0.5GB	£15 per extra GB
Vodafone	64GB	£345	£27	2GB	£15 per extra GB
Vodafone	64GB	£645	£15	2GB	£15 per extra GB
Vodafone	64GB	£645	£7.5	0.5GB	£15 per extra GB