Not sure why this was being billed as 'London mini-golf' - the impression is that there is something London specific about the theme of the holes. Sadly they are all standard fare, but fun to play nonetheless. It may just have been the fact that it was a Saturday lunchtime, but it was deserted - and as one of our party couldn't make it - a complete waste of time and money in pre-booking, when no refunds are available.
The staff were polite and friendly, and everyone had fun so I would recommend it, but warn you not to expect the most amazing course on the planet.