Top services are:
1)
Metronet pay as your go 3 month contract
Following all have monthly contract
2)
Freedom2surf
3)
Zen Internet
4)
Nildram
5)
Eclipse
6)
Plusnet
7)
Force 9
Word of advice on the monthly contracts look at the small print in terms of offers for free equipment/reduced migration costs etc. If you cancel within a 12 month period there maybe a cancellation charge.
As usual
there is no such thing as a freebie 