Good Bonsai trees are hard to find, and I can personally vouch for the quality of Thompson and Morgans trees as I purchased the Golden Larch last Xmas as a gift.
Can't find any voucher codes but they do come up from time to time so worth looking. Can also use topcashback.
'Small but perfectly formed, these dwarf ornamentals have all the charm and character of a full-size tree. Meticulously cultivated to achieve a mature shape they're appealing from every angle and very easy to look after - just prune and keep watering'
Supplied as a 3-year old tree in a ceramic-effect pot.
Will try and add a pic!