I worked in London and my father commuted into the city for decades, including through the IRA threats of the 1970s. Nevertheless, I was still wary of going into the city yesterday for a 'day out from the Midlands' after driving towards the station with the terrible news of Brussels on the radio.
It sounds a terribly harsh thing to say, but the terrorist risk is still incredibly low compared with the standard risk of anyone travelling on the roads or even having a serious accident at home, see http://www.rospa.com/home-safety/advice ... -the-home/
I hope you don't see this as trivialising the horrific incidents of yesterday and my thoughts and prayers are with all those affected. And - of course - anyone will respect your decision in the circumstances, whatever it is.