Worked a treat, I had only one go-around in 6 years due to the aircraft ahead not making its turnoff.
Much better high speed turn offs at Heathrow. Better placed, don't have 120 degree turns immediately after exiting the runway, etc. EG, the high speed exits for SYD 34L are crap- way too far in although you do have the benefit of not having the hard turn back. The SYD 16R turn offs are too close on the domestic side and too far on the international side...... and both still have the hassle of having to hang a 120 degree turn not long after you're off the runway.