On behalf of the forum staff and membership our thoughts are with those affected by today's events at Parson's Green.
As enthusiasts we have our part to play when we use transport services throughout the capital and the UK, remaining aware of what is happening around you. If you notice anything suspicious, please report it: www.gov.uk/terrorism-national-emergency/reporting-suspected-terrorism
Once again photography is playing a role, as anyone who has captured images that may be of assistance for investigative purposes is being asked to submit these to the authorities.