Called on Wednesday afternoon and they came out the very next day. The chap who arrived was the owner of the business and was exceptionally friendly, polite, and professional throughout.
He took the time to show me the tool they use, which was genuinely interesting. I have removed locking wheel nuts myself in the past by welding, which is messy and awkward; this was a far neater and more controlled solution. He then removed all of the locking wheel nuts quickly and without fuss.
Somewhat unusually, there were six locking wheel nuts across my four wheels, and even more oddly, two different types. All were removed efficiently and replaced with standard bolts.
This saved me a huge amount of hassle and what would otherwise have been a real headache. It was absolutely worth every penny and I would use them again without hesitation. Thoroughly recommended! Many thanks to Ridgways, and I sincerely wish them every success in the future.