Don't apologise! He's not easily found in 1901 (census date 31 March) - perhaps he and Maude had taken a spring trip to Finland to break the happy news to his family?
Yes, that is possible, I suppose!
The information that he was at the Consulate from 1900 comes from
http://www.finemb.org.uk/public/default.aspx?nodeid=35340&contentlan=2&culture=en-GB:
"In 1900, Anders Johan Leopold Norrgren succeeded him in London to deal with consular affairs. Norrgren, a graduate of St. Petersburg Diplomatic School, had previously been a staff captain in the Finnish Guards Battalion. In 1902, he married an Englishwoman, Miss Edith Massey-Lawless and continued as Consul General right up until 1930. "
They are wrong about the date of marriage to Florence Edith Massey-Lawless, which was in 1904, not 1902 as they state on the webpage. but I would assume that they know the history of the consulate...?
Two possibilities I can see:
1) The Maud Whitcombe b. 1883 Chesterfield d. 1903 Chesterfield aged 20 (doesn't seem to be any connection to London, I think she was in Derby also in the 1901 census)
2) The Maud Edith M. Whitcomb b. 1885 West Ham district m. 1908 Hendon, Middlesex.
("Whitecombe" seems to be a variant spelling of the above which is not common).
But without an address or father's name for her hard to prove anything. (either an address for Maud or if you know where Anders would be living at the time you could look for Whitcomb/Whitecombe families nearby or somehow connected via his work).
If it was the first Maud, who died in 1903, that would explain why they never married. But Maud number 2 is of course better placed geographically.