Areas that have been targeted include : Newcastle, Tynemouth, Redditch, Worcester, York, Bradford, Birmingham, Warwick, parts of London (I'm not sure on which parts). Some of these are areas with relatively (for the UK) high numbers of long-standing ie 3rd even 4th generation settled former immigrant populations eg Bradford, Birmingham, others are areas close to where Reform is popular eg Newcastle, Tynemouth.
York's a weird one, very white city , not close to any Reform stronghold, but this weekend is the biggest in the horse racing calendar there so there will be lots of drunk out of town folk around, traditionally it gets a bit fighty at that point. Warwick again, not sure why that's a target, maybe it's easy to get to from other places.
Places where Reform have traction already, there aren't significant flags as yet. Eg hardly any in Gainsborough, Bolton, Hull, Grimsby, just the odd gammon with his own flagpole, none of the lamppost scaling antics in any of these.
Nothing in the surrounding countryside either, around these urban centres or near the urban Reform areas.