In a tweet from Martin Lewis, he predicts rises in UK energy prices as follows…
If you pay £100/mth now, from Oct £165, Jan £170
If you pay £150/mth now, from Oct £250, Jan £255
If you pay £200/mth now, from Oct £330, Jan £340
If you pay £300/mth now, from Oct £495, Jan £510
These predictions are based on calculations which determine the UK’s energy price cap.