Courses in the South East

Hi all!
I’m a mobile hairdresser and strongly believe in continuous personal development, so every year I try and do at least 1 course just to keep me up to date with what’s new, whether that’s in colour, cutting, learning about a specific brand or a different method of hair extensions. I’ve done courses with capital and Sally’s but was wondering if anyone had done courses anywhere else that they’d recommend? I say South East area but I’d be willing to travel for the best!