you may find the following thread over at forex factory interesting - its a large thread, only started april but has a large following. i've certainly had, so far, small measures of success with it. i like it
http://www.forexfactory.com/showthread.php?t=291622
obviously the intended use is forex and uses 4 hr charts. but i think it's quite flexible and really is ok in all timeframes (imo). i had a look at ftse with it and looks ok! i'll demonstrate if i may with a couple of charts. i've changed things slightly from the ff thread, as you'll see. though that's me innit, forever the tinkerer. really its just an indicator extension set and additions to theories i've posted about in the past.
1st chart shows an expanded daily view of ftse with the tdi indy, ha candles, price close line (black) and a 5 sma (blue). for those who do not chart with mt4 i have added a stochastic, to try demonstrate that it's possible to replicate, as near as was possible, the idea and it kind of looks ok when viewing the big picture.
ok 2nd chart has a zoomed in view of trends and turning points. note that in the zoomed in chart the stoch indy really fails quite badly while the tdi looks really good! note also the expansion/contraction of the price close line vs the sma line. compare that to the tdi which shows a smoothed expansion/contraction view, nice!
last chart has a zoomed in view of a trend where you could get scared out the trade on upward price spikes. fear not! as you can see its possible to stay in the trade!
in conclusion. i believes that satisfies the op's request for something indy driven for staying in a trend.