I have always enjoyed reading british manuals because their dialect is so different. Then I can ask my chums to pass me the 13mm spanner, and finish waxing the L/F wing on my car, and cleaning the windscreen, and ... Really, I've never had a problem with it, but I have been farting around with this stuff for close to 40 years and have had Clymer and Haynes manuals at the same time.
Now, the BMW factory manuals are a good read and I think a Brit must have done the translation on the /5 book as mechanics are referred to as "fitters", real good wrenches as "master fitters", and other such terminology.