The RM Nimbus PC-186 was moderately popular in UK educational facilities, and obviously used the 80186.
Once upon a time I came across some unnamed PC clone, skulking in our university's business department that actually used the even rarer 80188, at the time no-one even believed me that it existed, but the modern internet thankfully makes it clear that it did.
Waiting for the tape machine to boot was mind numbing since you had to load basic from tape too (as you probably remember).