Help please - also broken down!!!!

[dusty]

Car parked after no-probs driving. Come to re-start some 5 hours later and no sign of life at all. No central locking, no interior/exterior lights, no alarm. Nearly new battery tested and has full charge.

Have checked visibly for any loose elec connections, duff fuses and relays etc but can't find any. Have 'wiggled' most things but without any joy = still completely dead car. Baffled, me I is!

Any help, advise, pointers (have already thought seriously about getting rid!) would be so gratefully received.