can anyone advise on where, which company i can use to post packages to uk.

Are you looking for a way to get your goods back home? Or for the next employee of a Thai postal service to get a free goodie to sell on the black market or give to a family member? I'd avoid thinking cheap when it comes to mailing something to or from Thailand.

Thailand still has Surface mail by sea , that is the cheapest , takes 6-10 weeks,

if it is for Ebay sales this will be way to long ,

SAL is more but only 2 weeks or so ,

Just check the Thai post website , it is in English too

Post Office, dependent on speed required.

Also depends on your location as all available shipping services are not available everywhere in Thailand.

will be posting from pattaya to UK. smallish parcel up to 3 kilo each time once or twice per week