O caminho rápido para partidas está incluído:
Fast Track departures is available to first and business class passengers in addition to top tier members of airline frequent flier programmes.
(fonte)
Para chegadas é um pouco mais complicado:
Fast Track Arrivals in Terminals 2, 3 and 4 is available to invited Non-EU Premium Passengers. Please be aware that eligibility criteria will vary between participating airlines. Passengers are advised to check with their airline representative upon arrival at Heathrow or alternatively please refer to your airline’s website.
(Mesma fonte)
Pode ser necessário verificar com sua companhia aérea ou na chegada.