Jonathan Trott and Ian Bell made half centuries ahead of the first Test of the summer at Lord's next week, as Middlesex's fixture against Warwickshire continued to be dominated by the bat.
Trott made 65 and Bell 62 as Warwickshire successfully steered the match towards a draw following Middlesex's overnight declaration on 428/5.
Corey Collymore took three wickets - including that of Tim Ambrose in the last over of the day - as Middlesex chipped away steadily at the reigning champions' batting line-up.
But with rain having affected the opening two days of the match and Warwickshire already close to saving the follow-on, the visitors would have to pull off a magnificent final day performance to get close to a win.
Warwickshire were steady with the bat in response to Middlesex's mammoth first-innings total - which featured a magnificent double-ton from Sam Robson.
Four of their top six, including Ambrose (55) and Laurie Evans - who retired hurt on 59 - made half-centuries, with Trott's the highest score so far.
Captain Jim Troughton made a duck though, one of two wickets for Tim Murtagh.