Just read elsewhere that aslong as the trailer does not weigh more than the car and overall the car weighs less than 3500kgs I should be fine?

My car weighs 1.4 tonnes unlaiden so providing the trailer and mini are less than that I should be fine?
Cars a 2002 Peugeot 406 2.0 HDi 90 saloon by the way.

God it's all confusing