It will be interesting to see whether any British people turn up at tomorrow's march or whether they will all be Ukranians and North Koreans, coming from Inverness, Glasgow, Belfast, Manchester, Leeds, Hull, Cardiff, Bristol, Penzance etc.
This petition already has the second largest number of signatures of any UK online petition. The largest, started in May 2016 called on the government to require a 60/40 majority on a 75% turnout before the referendum result could be enacted (which is the normal rule for constitutional change). It reached over 4 million signatures, but was unfortunately ignored by parliament.