Same in the US, which is the preferred spelling for both given and surnames. There are quite a few Englishmen on this very, very long list:
I’ve known two people (Americans) with the surname Fitzmaurice; both of them pronounced it “fitz-morris.” As the surname’s origins are English and Irish, the pronunciation now doesn’t surprise me (though it did when I first heard it), given what’s been described in this thread.
It is unusual enough in England to be noteworthy. If you ask an English person to write down the first name pronounced ‘Morris’, they’ll write ‘Maurice’.
And to any Brit the idea that he was ever “more EES” Micklewhite would be hilariously improbable.
Or a dance!
The Houston Texans used to have LB called Bernard Pollard. The commentators pronounced it as “Ber-NAARD POLL-urd” and the English would have pronounced it as “BERN-erd poll-AARD”
Not me or any English person I have ever met.
Not that I have ever heard of mr. Pollard but to me the pronunciation would be BERnard POLLaard
Or a chair!
The late Belgian cartoonist Maurice de Bevere, creator of Lucky Luke, used “Morris” as his pen name. He adopted it as an American version of his given name. If I’m saying his name in French, I’d probably pronounce both “Morris” and “Maurice” the same way, something like /mɔʁis/ or rather /mɔʁɪs/ in my dialect. If I were to say his name in English, I’d probably use the common English pronunciation of “Morris”.
All the English people I know say Bernud. The last vowel is very short, and sometimes sounds like Bern-ed. No real stress on either the first or second syllable either, but maybe more stress on the first.
I’m not of that class 
, nor is Stephen Fry, but he was one, and he pronounced it val-lit. Now, that is a period piece, but if the pronunciation has shifted, I think the show would have reflected that.
Also, it’s what they still call themselves.