Well Loony Boris and Machievellian may both have lots of LHR workers in their constituencies. Plus lots and lots of corp execs and IT people who live in those areas and work there and are not going to want to go to Gatwick to fly to AMS so in my opinion representing a constituency near LHR makes them much more likely to be pro LHR.
Of course this forum often made the point that LHR expansion taking decades made UK laughing stock of the world , well it s got quite bit of competion at the moment with brexit, Boris and England 1-iceland 2, the latter being a perfect metaphor for our place in the world at the moment . Very bloody sad.
Can the third runway argument be delayed again ?