At 1km you could - on an ideal line still get 40Mbps or maybe 50Mbps although throw in noise, cross talk, a joint or two and that will drop but you should still get a reasonably high speed.
Try BT directly for their options and also some other ISPs can offer lower speed products too.
When you do get FTTC installed, please find out your sync and actual download speeds as it will be of benefit to others in the future.
M H C
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