Hammersmith and city line.
To travel from Heathrow to Kings Cross, you can take the Heathrow Express train to Paddington Station, then transfer to the London Underground and take the Circle or Hammersmith City line to Kings Cross. The journey takes approximately 45-60 minutes.
You would need to get a train from Waltham Cross station and head towards Liverpool Street station.From Liverpool Street station, head to the underground and look for the Hammersmith & City Line.Or get the 217 bus from Waltham Cross bus station and head to Turnpike Lane underground station. From here you can access the Piccadilly Line which will take you to Hammersmith on the Piccadilly Line.Roughly either of these journeys will take approximately 1 hour and 20 minutes, according to the Transport For London ( tfl ) website.
take the pically line to kings cross st parncas and take thameslink from there
To travel from Heathrow to Kings Cross using the tube, you can take the Piccadilly line from Heathrow Airport to King's Cross St. Pancras station. The journey takes approximately 50 minutes.
To travel from Euston to Kings Cross, you can take the London Underground's Victoria line. The journey is short and direct, with the two stations being only one stop away from each other.
To travel from Paddington to Euston, you can take the London Underground's Circle or Hammersmith City line from Paddington to King's Cross St. Pancras, and then transfer to the Northern line to Euston. The journey takes about 20-30 minutes.
The Piccadilly line is the only one that serves Heathrow, so take it to Kings Cross and then change onto the Northern Line (southbound) to London Bridge Station.
Take the Victoria Line direct from Euston to Victoria. Alternatively, take a cab - however, it will be considerably more expensive and probably won't be quicker.
Depends by what you mean by "around London". If you mean in London it's only Kings Cross. If you mean from "some miles around London", then add Stevenage (same line as Kings Cross).
Take the Piccadilly underground (tube) line from Heathrow to Kings Cross and get the overground train to Ely from there. The whole journey should take about two hours thirty minutes.
Kings Cross
To get to Oxford Circus from King's Cross, you can take the Piccadilly Line directly. Board a Piccadilly Line train towards Cockfosters and travel for three stops until you reach Oxford Circus. The journey is quick and convenient, taking approximately 10 minutes.