Just going to give a specific read for all those interested, as I certainly was.
This is what Baz was suggesting.
Simple UK Light: This licence authorises the use of hand-portable or mobile radio equipment anywhere within the UK. Base station use is not permitted. Licensees have access to fifteen frequencies spread across four Business Radio frequency bands and must self-coordinate with other Simple UK Light licensees. The licence fee is £75 for five years.
http://licensing.ofcom.org.uk/radiocommunication-licences/business-radio/business-radio-faq/q18