There are already local contacts available for London and Cambridge if you are travelling from there:
For London: email@example.com
For Cambridge: firstname.lastname@example.org
Remember that this time the start time is set for 10am so arrive in Brighton the evening before if at all possible. There will be a convergence space available.
If you want text updates with information about the meeting point etc please text/email your mobile number to 07538093930 / email@example.com