<<Disclaimer:  Verify this information before applying it to your situation.>>

I don't live anywhere near Swindon, but this info I sent someone asking
about London may be of help

> For GF foods, I suggest you try going to a pharmacist (more commonly
> known as a chemist in the UK). They often have a green cross logo
> (part of which has diagonal stripes) outside the shop, or the traditional
> large pear shaped bottles of coloured water in the windows. The largest
> chain of chemists in the UK is Boots (who I work for!). The logo looks
> similar to the Ford cars one - it is Boots in an oval shape in dark blue
> and white (either way around) Lloyds chemists also have pharmacies.
> Drug stores probably won't have anything. The amount of GF foods
> stocked will depend on the chemists - all pharmacies can order them for you
> but it might take a couple of days. Check on the price first - GF foods can
> be very expensive. Health food shops like "Holland and Barrett" also sell
> GF foods.

Hope this is of use,

 Tim