Getting from Gatwick to Southend on sea early morning?

Question

I land at gatwick midnight and i need to get to hadleigh in essex as quickly as possible. im travelling alone and the only options ive got are...
a) waiting till 1.30 that afternoon to get a coach
b) getting a train at 3.30 am travelling through london and the underground late at night alone and not arriving till 6.20 because there are two change overs...
If anyone knows of any other options ive missed can you let me know

Answer 1

Those are all your options (apart from paying for a taxi) assuming the coach you refer to is this:-Gatwick Flyer
Operates direct services to Southend (from South Terminal only).
Tel: [phone]