I did eventually manage to complete my set of all 204 sheets of the 1:50,000 Landranger Ordnance Survey maps but decided that a paper set of the superior Explorer maps was out of the question.
I recently purchased the whole country at 1:50,000 for the computer at around £100 but again expected that purchase of the whole country at 1:25,000 would be out of range.
I don’t usually use the site for advertising but as maps are an essential requirement for our walking I thought you might be interested in this information. You can now purchase the whole country for your computer, smart phone or GPS device for £300.00 see http://shop.memory-map.co.uk/acatalog/info_MME_SE_GB_14.html