You say your brother received PCN, but then imply you were driving? Keeper has to deal with / pay the PCN.
You could have driven into the road, but would have needed to use the width restriction - any reason why not? Video doesn't seem to show any delays in making the decision to bypass the restriction.
Many of these moving traffic conventions can be beaten at tribunal, but full penalty is in play - others will advise the chances of this one getting cancelled.
