There are several tonearms that work well with the London Decca series cartridges, the Fidelity Research FR-64 and FR-66 being the most notable (and among the most expensive). I have used Ortofon, Jelco and the Thomas Schick tonearms with good but not great results. I found that the Pear Audio Cornet 2 tonearm unipivot works very well with the Decca Gold. This is an updated version of the Nottingham tonearm designs, so you might start there.
Some have reported that the Dynavector DV-507 works well but I have not tried this combination myself. A friend of mine runs his Decca cartridge on a Pete Riggle Woody tonearm and claims that it's the best pairing for the Decca series. I'm skeptical but I have not yet had a chance to hear it so I'll pass it along as an unendorsed recommendation.
Some have reported that the Dynavector DV-507 works well but I have not tried this combination myself. A friend of mine runs his Decca cartridge on a Pete Riggle Woody tonearm and claims that it's the best pairing for the Decca series. I'm skeptical but I have not yet had a chance to hear it so I'll pass it along as an unendorsed recommendation.