Judge’s charge was appropriate in trial for assault causing harm

Appeal against conviction for assault causing harm contrary to s. 3 of the Non-Fatal Offences Against the Person Act 1997 - victim was taxi driver and appellant had been passenger in taxi on night in question - appellant poured drink over victim and then assaulted him by way of a blow or blows to the face while both men were standing outside the taxi - appellant had alleged that the victim poured the drink and hit the appellant first with the appellant responding with a single blow in self-defence - whether trial judge erred in her summing up to the jury by summarising the defence and prosecution cases in a manner that was unbalanced and favoured the prosecution case - whether trial judge erred in law by directing the jury on the issue of self-defence and in particular by refusing to redirect the jury in accordance with requisitions from defence counsel.