On Mon, 13 Mar 2017 08:33:45 -0700, sm_jamieson wrote:

I need to blitz my old lawn / weeds before re-turfing. Where is the best
(cheapest) place to get some glyphosate concentrate (say 40 to 50%
contentrate) that does not break the bank and avoids internet delivery
costs? 500ml should do it. Any good chain of garden centres, for
example. Midlands region.
Thanks,
Simon.

Try ebay:

http://www.ebay.co.uk/itm/like/262001119456?
lpid=122&chn=ps&adgroupid=35352091421&rlsatarget=p la-278386804491&adtype=pla&poi=&googleloc=9046671&dev ice=c&campaignid=738466455&crdt=0

or with a shorter link:

https://tinyurl.com/znvvded
Or, give your recipients confidence with a preview TinyURL:
http://preview.tinyurl.com/znvvded

I bought the Gallup 490 recently (NB it is the concentrate so mix
according to instructions). No problems with ordering or delivery.

I see you only want a small amount though - try Rosate 36 also on ebay -
13.99 for 1 litre.