Ace I'll look into them. I think I'm also going to start rubbing chamois cream into the balls of my feet to soften them up - seems like that might help...
Not sure whether keeping the thread updated with my progress is:
a) helpful for others
or
b) oversharing
Something along these lines: https://www.runnersworld.com/uk/training/cross-training/a27027631/glute-exercises-runners/
Focus on stopping the knee rolling in
Also do clamshells, bridges, single leg bridges etc. All good for glutes.