Hello and thanks for your interest. I was a professional entertainer for 30 ish years which included being the youngest toastmaster in Great Britain for a while! 
When I had this tailormade for me the tailors asked me if I wanted a budget jacket or a better quality one I opted for the better quality one. Please do not compare this to the very thin cheaper options.
when this fitted me perfectly 

I am 5.10 
collar 16
chest 47 ish 
waist 38-40 
I would describe this as large/maybe XL
I have not toastmastered for 10 years so its been in a wardrobe in a suit carrier in a smokeless dog less home 
The Shirt & trousers are NOT included 
For this Lot I am selling the jacket and throwing in free of charge
Waistcoat and white bowtie
The waist coast is more cream then white the elastic waist band has a couple of marks not sure if this was coffee or mild rust from the connection
The bowtie is worn and starting to discolour

I have also the pair of tailor made heavy (possibly Woollen) trousers that I bought at the same time if anyone wants at additional charge. 38-42 waist (short) 
jacket From top of colour to bottom of tail, 108 cm

from top of arm to cuff 59 cm from underarm to cuff 41.5 cm bear in mind cuffs from shirt should appear  visable with cufflinks so slightly shorter then perhaps a suit jacket

We are in Essex so if you want to try on no problem

25 years ago this cost me approx £475 so I suggest now would be £900-£1200 new

When photographed to put this on sale I have put on a lot of weight so it looks  a bit small on me!!