FLM - Greenwich 10k was in the Runner's World race diary and did get over 300 entrants (a few down on 2002) but given the suberb venue, I would have thought they could have filled it by e.g. putting up posters in the park, handing out flyers at other events etc (Hope this doesn't sound critical.)
cns - not sure you'd recognise the Coach & Horses, mate - it's been given the 'paint everything white and bung in a few sofas' treatment