Here's a link to a Maplin web site page, which has several solar power unit items which will get you on the right track:
Solar Power Stations : Maplin Electronics
I noted that Maplin sell a 150 watt power unit for £1500. It sits on an aluminium stand which can be optimally positioned and delivers through its charger to a high performance battery. The supply from this would then enter the building and be connected to a power inverter so that you can run several items simultaneously. It can deliver 750 watt hours per day and can be used to power quite a lot of stuff from say, a multigang extension cable arrangement. You can also use it for 12V.
You can add extension units to it too.
From the the Maplin link I would suggest you move on to the Google Shopping link, which is a tab you can see on the main Google.co.uk search page. Here you can start doing your more serious shopping searches, viz:
Google Product Search
This shopping tool is independent and will even throw up second hand items in its search results.
I hope that helps.
Good Luck.
PS. Don't forget to click my 'Thanks' button.