Are These Correct And Why Please

[MissLead]

3d. Satirical piece about Thatcher finally seen in the fringe. s?i?t. Skirt? Skit fits in but why Thatcher and the R?
20a. Scrubber shows anger at court - wife left outside. ?i?e/???l. Line call?.
17d. Puzzle factory contracted to produce image of Foster's. f???r/?l?n. Floor plan?

[dannyk13]

last letter .of Thatcher in skit

[dannyk13]

20a.Wire wool

[dannyk13]

17d.Yes floor(puzzle) + plan(t)

[sedge47]

3d R is final letter of (Thatche)R
20a wire wool - ire and woo with W(ife) and L(eft) around them
17d floor (puzzle) + plan[t] - Norman Foster is an architect.

[MissLead]

Many thanks to both of you.

[Alicat58]

17d. floor plan - Norman Foster, renowned for his work. http://ny.curbed.com/archives/2013/09/17/floorplans_revealed_for_norman_fosters_50_un_plaza.php