Hello
I've just got back from Gatwick tonight and I don't think there's really any need for much extra time. We checked Auntie in 1 1/2 hours before her flight (later than planned cos of awful road works in E grinstead) We sat and had a coffee before heading to departures and although it did take a bit longer than usual to get through it wasn't excessive, maybe 10 mins including queuing to clear security.
Hand luggage is allowed, the only restrictions were no liquids of any kind, no toiletries or cosmetics (not even a lippy!), no lighters. Everybody seemed to be removing their shoes which were put through the x ray. Be careful Tracey, I know how you love shoes; restrain yourself and only claim your own shoes at the other end!!!!
Hope that helps.