blizzard said:
...I would love to see what the Gardman lamp looks like for reference as it may be a style I more go for....
I know there are several photos of the Gardman on here someplace, but it's faster to post the photo I've got of an unmodified lamp:

This is a photo of the Gardman (I believe a plastic version), or a Gardman-like lamp that was once available (and may still be) from Amazon. An actual metal Gardman photo can be found here http://tardisbuilders.com/index.php?topic=613.30 about a third the way down the page. Instructions for modifying it are also in that thread.
Here is a Tennant TARDIS lamp - photo of the actual screen-used prop with the modified Gardman cap:

(Above photo courtesy of
Scarfwearer)
Notice on the modified lamp cap the vent holes section has been removed and the domed part lowered to the main part of the cap. The "bee hive" portion has also been removed, the hole covered by a "flat" of sorts, and then tipped by that nipple with the hole in it for the ring to hang the lamp.
The Matt Smith lamp cap is the same except that it kept the "bee hive" (though a little smaller than seen in the top photo) and didn't make use of the small nipple at the very top. (And of course, the blue paint is brighter.)
So just to complete the comparison here's a photo of the actual Smith TARDIS lamp "out of the box" as it were:

(I believe this photo is courtesy of
timerotor. If I'm wrong, please correct me on that. I want to give credit where it's due.) Notice the very close details this lamp has with the Blockade Runner lamp (though as
evil bob, and I, have mentioned, that lamp is a bit smaller than the actual prop's lamp; but for the price, who is going to argue over an inch or so here or there?).
Also note that somewhere on the Forum are photos of the "Promotional" Matt Smith TARDIS which has a different lamp, and this TARDIS has never been used on-screen; it's a promotional thing that travels around to different places to, well, promote 'Doctor Who'.
Dino.