Posted: 26/04/2015 at 07:50
I'd leave the vigourous raking for now and let the lawn recover (it will, don't worry).
I can't really tell from the photos whether it's a weed or grass, but I would suggest more regular mowing - that grass is too long.
Regular mowing will encourage the grass to spread out horizontally rather than upwards. It looks to me as if the long stalks may be the grass trying to flower and seed.
Cut the lawn at least once a week with the mower blade set at the mid level and you'll see a noticeable improvement in a few weeks.
If the mower is chewing rather than cutting the grass cleanly get the blade sharpened or get a new one (I got a new blade for my hover mower from Amazon, or you could try http://www.espares.co.uk/
If there are still some large leaved weeds use a 'touch' weedkiller gel such as this one http://www.homebase.co.uk/en/homebaseuk/roundup-gel-weed-killer---150ml-007672 .
If there are still some bare patches in a few weeks' time you can rake the soil over gently and scatter some grass seed over to fill in the patches - if the soil is very dry it might be better to leave this until September which is a really good time for sowing grass seed.