That logic analyser would also be a great tool for diagnosing faults on 1980s-era home computers (basically just an 8-bit micro being pushed very hard), which are now being rediscovered for their trendy "retro" value.
In fact, there's
another forum user having trouble with an Amstrad 464 just a ferry crossing away from you. Could be worth exchanging PMs -- but then please post publicly if you discover anything that might be of benefit to readers in future.