This is actually a swing to Goldsmith compared to Johnson last time and is closer than London as a whole (which is not... normal). The concern is that possibly the whole mini Modi business worked, and I dread to think what the future implications of that might be. Though we'll need to look over ward figures (when they're out).
The link from the Guardian
http://www.theguardian.com/politics/ng-interactive/2016/may/05/uk-election-results-tracker-2016 Has Brent & Harrow:
Labour - 45.74%
Conservative - 33.86%