Here are some I've found:

https://footsoreminiatures.co.uk/

http://www.hfminis.co.uk/

http://blackchapelminiatures.com/en/

http://www.fireforge-games.com/

http://otherworldminiatures.co.uk/

http://www.crusaderminiatures.com/index.php

http://red-box-games.com/

Don't forget Conquest Games - they have some lovely Norman Knights both on foot and mounted - and a generic Medieval Archer set that would work for militia.

http://www.conquest-games.co.uk/

Don't forget Perry Miniatures! The Perry brothers sculpted a lot of the original LOTR line.

There's loads of great companies! Just gonna quote myself from this (http://one-ring.co.uk/viewtopic.php?f=30&t=33251) post some time ago:

- Northstar (check out Frostgrave and their upcoming Fantasy range with Tolkien-ish Dwarves!)
- Reaper Miniatures (lots of miniatures for Pathfinder)
- Perry Miniatures
- Conquest Games
- Crusader Miniatures
- Copplestone Miniatures
- Midlam Miniatures
- Musketeer Miniatures
- Otherworld Miniaturs (lots of classical RPG miniatures)
- Gamezone Miniatures
- Hasslefree Miniatures
- Red Box Games

yeah, I'd throw in another recommendation for Red Box and Hasslefree miniatures.

I mention the two, because Hasslefree is a UK reseller of Red Box (as Artemis Black's page). And the Red Box miniatures, especially the dwarves and "fantasy English" and "fantasy Norse" are well suited, scale wise, for LOTR.

Whenever I get around to finishing up my LOTR collection, I will be using Red Box for various Rhovanion factions.

Reaper I very much love, but I love them for D+D stuff, rather than LOTR. They tend to have more macho-posed, buxom-lassie type figures, as well as in a rather more "heroic" scale. Dark Sword miniatures sort of makes collector's figures in response to Reaper. One of the reasons I made a big shift in my minis collecting was realising that DS's main range were in a huge scale, way beyond LOTR. Their Jeff Grace sculpted Dwarf towers over LOTR dwarves. After getting a bunch I decided to focus on painting D+D minis instead.

I also recommend Tom Meier's Thunderbolt Mountain figures. (Meier also sculpts a lot of figures for Dark Sword, and they are at a scale more compatible with LOTR metal miniatures)