The American Stage Band Music Service is the UK Agent for this excellent series of big band charts. If you havent yet tried any charts from this publisher, then you should ask for one of the demo recordings to find out what you are missing. There are some great arrangers featured . Every big band library should contain a selection of these charts.
(These charts are recommended by The American Stage Band Music Service.)
USA: Grade 1 (very easy) to 6 (difficult)

Grade 2 Series
Barners Blues - Contorno28.57
Coffee Coolata - Alberty32.14
Fussin - Alberty32.14
Horse Feathers - Alberty25.00
Just Got The Blues - Pappas28.57
Ol Grumpy Blues - Pappas28.57
Palm Coast Romp - Alberty32.14
Riff Raff - Lowden21.42
Sundays Preachin - Alberty25.00
The Big Cheese - Alberty25.00
Uptown Sneekers - Alberty35.71

Grade 2 1/2 Series
Blue Ice Blues - Matchett32.14
Bristol Harbour - Davis32.14
Mucho Loco - Lopez35.71
Savannah In Havana - Lopez32.14
Squishy Toes - Spede32.14
Sweet - Lowden25.00
Swing City - Lopez32.14
The Funky Donkey - Sebesky32.14
Travelin Light - Lowden25.00

Grade 3 Series
A Special Someone - Contorno28.57
Angela - Dilkey32.14
Ballad For Marilyn - Matchett32.14
Bossa For Bobby - Dilkey32.14
Buckys Romp - Davis32.14
C.I.C. - Davis32.14
Caliente! Caliente! - Lopez21.42
Classy Sassy Blues - Matchett32.14
El Gato Gordo - May35.71
Fudge Said The Judge - Taylor25.00
Good Enough To Dream - Lowden21.42
Hangin With Chad - Davis32.14
Kanon - Alberty28.57
Kenne Sa-Wing - LaBarbera32.14
Leave It To Beavis - Lopez25.00
Looking For Color - Davis39.28
Lumpy Lemonade - Sebesky21.42
Minor Episode - Dilkey32.14
Moon Over My Hammy - Lopez32.14
Oye Que Pasa - Lopez21.42
Rays Tune - May25.00
Rush - Alberty32.14
Shoot The Sherbert To Me Herbert - Taylor21.42
Song For Johann - ASlberty35.71
Star Spangled Banner - Lowden32.14
Sting n Linger - Lopez 35.71
The Vaz Report - Alberty (Trumpet solo: grade 5)39.28
Theres Only You - Matchett32.14
Two Hearted River - LaBarbera32.14
Weird Blues - Davis39.28
Whos Gotcha Now - Lopez32.14
Whose - Kiger32.14
Winter Heat - Vontorno32.14

Grade 3 1/2 Series
Cabin Fever - Matchett32.14
Compublues - Nagle 32.14
Funky Freddy - Lopez28.57
Hey! Hows Your Mama? - Archer32.14
Makin Some Changes - Dilkey35.71
Slo-Train - LaBarbera28.57
Song For Gerry - Reisteter32.14

Grade 4 Series
Flashpoint - Alberty39.28
Gotcha Covered - Pendowski32.14
In Full Swing - Lowden39.28
Jazzer Genes Shuffle - Dilkey35.71
Moon Pillows - Davis32.14
Northshore Boogie - Dilkey32.14
Shoes - Kiger32.14
Struttin - Bambridge39.28
This Aint No Way To Do - Alberty32.14
The Rufus Shuffle - Dilkey32.14
Virtual Salsa, Not! - Lopez35.71
Who Knows? - Lowden39.28
Wishbones - Matchett39.28
You Snooze, You Lose! - Lopez32.14

Grade 4 1/2 Series
Boppin At Brookdale - Nagle42.85
Sambiosis - Dilkey32.14
Skeleton Crew - Dilkey39.28
Technically Speaking - Pendowski32.14

Grade 5 Series
A Sunday Ride - Pendowski32.14
Bossa Me Mucho - Barnbridge39.28
Christmas Medley - Bambridge53.57
Double Bubble - Bambridge53.57
Double Or Nothing - Pendowski32.14
I Snore, You Drive - Lopez32.14
Nossa Pequena Concao - Pendowski32.14
Now Hear This - Basmbridge53.57
One Time Is Enough - Pendowski39.28
One Way Jam - Lopez53.57
Schmooze - Kiger32.14
Your Move - Bambridge53.57