How about the old airline pilot who said after landing: "That was my last flight ever. I've been based here twenty years now and I'd just like to thank you folks in ATC, here at xxxx; the service you've given to me over all these years narrowly puts you in second place...."
ATC: "Thanks, but can we ask- who beat us?"
Pilot: "EVERYONE ELSE!"
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Seriously, the service we get in UK is really very good all round but the London controllers take some beating (sometimes we'd like to beat them harder ......only joking).
P.S. So, next time out of Battersea - can I go straight to Brent, please?