DS was a great little sleeper when younger (he's now 9mths) and would sleep for 4-5 hours at a time in his sleepyhead. He outgrew this a few months ago and we didn't bother getting the next size up (£180!)
Well let's just say his sleep went to shit! He was teething at the time, then got a cold, then learnt to crawl, etc, etc. I put his bad sleep down to the 8mth sleep regression and resorted to cosleeping just to survive.
The other day DH and I were packing away some of DS's old clothes and came across his sleepyhead. DH started talking about the days of one wake up at night and whether we should sell it. I then started thinking about whether buying the next size sleepyhead would work. At the moment £180 is nothing if it will help DS sleep.
I came on here and searched for sleepyhead grand, to see what others thought of it. I came across a post from someone saying they took out the pillow part and placed it under their DC's sheet, creating a makeshift sleepyhead with more space. Couldn't hurt, I thought.
OMG.....DS went down at 7pm (drowsy with a firm hand on his chest, thanks to FATE's advice) and then went downstairs. I stared at the video monitor waiting for him to wake. An hour went past.....nothing. He rolled over in his sleep....nothing. I finally went up to bed at 9.30pm and DS slept until 2am!! He had a quick bottle and then back down until 6.30am 
I feel like a new woman!! So thank you whoever you are 