The 1899 St Pancras East by-election was held on 12 July 1899 following the resignation of the incumbent Conservative MP, Robert Grant Webster in order to return to legal work.
[1] Webster vacated his Parliamentary seat by being appointed Steward of the Chiltern Hundreds on 1 July 1899.
[2] The Conservative Party candidate was Thomas Wrightson who had been MP for Stockton from 1892 to 1895.
Costelloe was the London County Council member for Bethnal Green South West.
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