Havelock Walk used to be industrial units, so it's possible that an artist might have rented one but it's probably more likely the studios were elsewhere in FH. The third clip features William Mitchell and he has a website (http://www.william-mitchell.com) so you could try asking him where his studio was.

I've seen discussion somewhere about the tennis club and swimming pool. Was housing or flats later built on it - Taymount Rise perhaps?