I've been to Golden Health in the past and seen, if I remember right, about four different girls. All were average to moderately good without setting the woods on fire, both in terms of massage and extras, but this was about two or so years ago. The place, fairly recently refurbished then, was quite well appointed with a shower in each of the two rooms and there was no need to haggle as they had a reasonable agreed pricing structure in place; an hour's massage = £40, HE = £20 or BTB + HE = £40. Never heard of any additional extras being offered and wasn't offered them myself. It was a pretty reliable option then.
The best of those I saw was Wendy, probably in her late 30s and as one of the managers there is a chance she is still there. That said there did seem to be a fairly quick turnover of the more junior staff as often happens in these places, so who knows? I had heard through the grapevine that Golden Health had deteriorated in the last year or so insofar as there weren't always clean dry towels available and the place wasn't as clean as it had been. I'm guessing that this deterioration, if correct, might have been accompanied by a more 'extensive' range of extras by some girls as happens sometimes when massage becomes less of a priority and the extras more important as far as the girls are concerned. I'd like to think that they'd got their act together on the towels and general cleanliness front.
Alternatives in the area include C&C (further up Junction Road on the other side of the road near the Archway end), another Chinese shop where the girls also reliably play, and Ruan Thai (a Thai place of course), only about a block away on the same side going up the hill, which is almost certainly 'legit', meaning no extras. I know two women who have been to Ruan Thai and they both thought the massage there was very good.