Yes, the have good prices on Durite products, and the cheapest Webasto heaters in the UK. I've used them in the past and can say they are quick and efficient.

Rgds,
Roman (UK)

Re Optima batteries Red and Yellow. The recommended set-up is to use Red Top for engine startup and Yellow Top for auxilliary power needs.

...1 yellow top and 1 red top or 2 red tops or 2 yellow tops - tch, what a dilemma..!
Throw your battery blues (reds and yellows) out with the bathwater by simply spending even more money..!
I went for 2 Hawker Energy Odyssey batteries.
Pricey, but shop around and get a trade discount. These batteries are probably the only genuine starter and deep cycle in one - and good enough to be fitted to British army Land Rovers...

A yellow deep cycle optima is very capable when starting big cars, trucks and boat engines. They’re very popular with American rock crawlers since they usually drain the battery often with extended winch use.

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A.B.

OasisPhoto.com – Images from the Magical Sahara.
ShortWheelbase.com – Jeep preparations.