Lack of head on my bitter?

[Brewmeister]

As well as adding non malted ingredients in your grain bill you could try bottle conditioning at a cooler temperature for longer - so many people bottle condition at 'loft' temps. A 'garage' temp is much better. You'll get finer bubbles which produce a frothier head

[molehill]

I have taken on board all that has been said/recommended and learning by the minute, hour, day, month.

I have produced two brews since and seen/tasted very positive results in my brews. Only one is at the point of readiness and it tastes bloody good! The latest, Adnams Bitter was bottled last weekend and tasted really good for a green beer...... And I cannot wait to sample it proper!

However, I still feel there is a lack of bitterness to my brews and I continue to read Graham Wheelers 3rd edition and have recently been reading about hops.... their % alpha, timing of additions etc. I freeze my hops in vacuum sealed bags and understand that freezing isn't ideal and that they can still deteriorate with time. Should I take this into account and increase the additions by a small percentage to ensure bitterness/flavour? Are there any books suitable you could recommend i.e. not too technical that could assist me in my continued learning in this incredible subject?

[molehill]

Just an update to say that my brews now hold their head and taste much, much better. The last three brews I added wheat malt into the grain calculations of the last two and the last brew flaked barley. All taste excellent and retain body and head without over-doing it..... Just how i like it. My next brew I plan to use a whitelabs live yeast for the first time, to see if there is any difference to the finished flavour? I like bitters such as Old Speckled Hen, Courage Directors, Adnams and Harvey's best. I am aware that Harvey's has its own yeast and the nearest appears to be Sussex 1 yeast from Whitelabs. I am also aware that it is a seasonal yeast. Can anyone recommend live yeast for the other beers I mention.

Thanks again for all the assistance...... Thanks to you guy's, my beers are good enough to share with friends and keep them!