Caddick took six for the second successive innings

But do not underestimate the importance of Giles's four for 103.

By concentrating on bowling over the wicket - too often a negative tactic for spinners but here with the intention of exploiting the clearly visible rough outside the right-hander's leg stump - he was able to control and attack simultaneously.

It was Giles's dismissal of Lou Vincent, caught off an attempted sweep, that precipitated the morning collapse.

And it was Giles who struck perhaps the most telling blow by having Nathan Astle brilliantly taken by Hussain at slip, low down and to his left.

A double-centurion in Christchurch, Astle could manage only four fidgety runs in Wellington.

Economical

If there is one statistic that highlights the dominance that Caddick and Giles brought to bear, it is that New Zealand's innings lasted 88.3 overs, precisely the length of England's first-innings effort but for 62 fewer runs.

For that, once again, Hussain has his two wicket-takers to thank, particularly Caddick who went for marginally more than two runs in each of his 28 completed overs.

Giles' dismissal of Vincent precipitated the collapse

Either side of lunch, he bowled unchanged and took five for 33 from 15 overs.

Like Giles, Caddick bowled at every New Zealand batsman, bar Adam Parore who was dismissed by Giles in the same over as Astle, and conceded only seven boundaries.

Often an under-performer in the first innings of Tests, Caddick was, for all that, not the obvious choice for Hussain to turn to at a vulnerable time of the innings.

But on Vincent's dismissal to Giles, Hussain tossed the ball to the Somerset bowler. Within two balls, Stephen Fleming had flashed to gully and the tone for the afternoon had been set.

Two overs later, Richardson, whose stubborn 60 had occupied more than four hours and featured 146 scoreless strokes, was taken at gully via the inside edge.

The catcher? Who else? Ashley Giles.