Well check at webpage what can you do with PACK1, 3 & 6.
PACK6 Have some HTC, some code calc, ZTE Rio2...
PACK3 most hot module it's Vodafone.exe interesting for low price Vodafone branded devices, LG and others
PACK1 most LG of 2G networks
I have made a little summarize, for best info check each pack modules and devices at the webpage.
As you are in UK, I may suggest PACK7 for Huawei devices (branded vodafone and others) and PACK5 for most qualcomm Android devices (Such as ZTE, LG, Motorola...)