After three non favouring weeks on this pair, I believe we are well overdue for a retracement.
--> RSI is indicating incredibly oversold. --> We have also perfectly rejected off of the descending channel which is the body of the major head and shoulders on this pair. --> The resignation of Theresa May and some further upcoming fundamental news, may stipulate some stability in pound.
If we see a daily bullish engulfing closure above 140, a 61.8% fib retracement is likely.
Seems like legit parallel line. However, technically right SH shouldn't be lower than left one and neck should be leaned at least in favor of breakout, but still at least reasonable bounce up to 142.94-143.25 is a must. Good luck!