Out of interest, over what distance is keeping to 160 kts required (i.e. where is the start point, if the end point is at 4 NM)?
Is this standard for busy airports, or is LHR special in this respect? Are most aircraft able to comply with this speed restriction (from turboprops to heavies)? Judging by the responses above, I would say yes...
Regards
NotaLOT