Originally Posted by
Mizter T
Else do as stut once suggested and park in Hatton Cross tube station car park (often seems to be spaces), or for a cheaper option the Hounslow West tube station car park, and get the tube to and from the relevant terminal.
I can't claim credit for this wheeze, but it has worked well for me in the past! Just note that there is a market in Hounslow West car park on a Saturday morning, so make sure you're parked in the right part if you're going over the weekend.
Another cheap stay available at the moment (again, I can't claim credit for this) is to use the T5 Premier Inn car park, which is available through justpark.com. The 7 bus (from Slough) links it to the CTA for T2 every 10 minutes, while the 7, 350 and 441 go from T5. All for free. Alternatively, you can take the pods from T5, walk down the passageway to the Thistle hotel, pay £5, then just walk out the hotel and over the road to the PI.