Ahh, Thornbridge Wild Swan - 3.3% -3.4% is it? Lovely drink. I was sat in a little side alley pub in Bridgnorth after an extreme Real Ale stag do down and back up the Severn Valley stopping at most of the stops and longer in Bewdley and several in the Kiddy station and many more in Bridgnorth station (plus Bathems in a bottle) on the train and the last drink I had at ten that night (long day) was Wild Swan. Gorgeous ale.
Bathems ale is good in a bottle. Tanners sell it amongst others.
If you can find it Salopian Oracle is fantastic

Morrisons have a wide selection of ales 4 for £6 if priced at £1.89. Ones I like and buy if I go there are -
Castle Rock - Harvest Pale (pale hoppy)
Thwaites - Wainwright (paleish); Tavern Porter
Titanic - Iceberg (very hoppy but clean)
Marstons - Oyster Stout (

)
Jennings - Cockerhoop (pale), Snecklifter (dark old ale)
Harvistoun - Bitter and Twisted (Scottish beer - gorgeous)
Currently selling in Shrewsbury Moorhouses beers such as Black cat and Blond Witch both are nice
Tesco have a load of good stouts/porters in and do a lot of regional ales, often 4 for £6 offers on. I went for weekend to Cheltenahm and their Tesco had a lot of oxfordshire and West country ales for sale.
Sainsburys sell lots of good ales and have 3 for £4 and 2 for £3 offers on and sell a simialr range as above but do sell Bath Ales' Gem which is a nice beer.