Ron Hill Tracksters for this weather, bargains to be had on Start Fitness if you're the right size. Lycra running trousers for when it's a bit warmer, frankly at this time of year there are areas that do not need the cooling provided by technical fabrics.
Cotton soaks up liquids and you get the unlovely sensation of running while wrapped in wet cold towels.
Loose legged tracksuit trousers are a trip hazard and should be avoided.
Socks, five pairs for three quid at Asda or Aldi or wherever, only do without socks if running in sandals.