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If for some reason you do go over your peak download limit they'll start charging you for that extra download. Obviously this isn't too great if you do it regularly but if its just a one off thing then its fine.


and, unless you are on 1G limit, they won't charge you until you have gone 10G over your limit in a month. If it is under 10G you can carry it forward for as many months as you like, until your monthly allowance had mopped up all the over usage. So for example on the 5G tarrif you could alternate each month between 8G and 2G of peak downloads and never actually pay any extra.
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