anyone got any recommendations for good bootliners to protect against the dog and the occasional boot full of tools and timber?

Seen some good ones online that cost over £200! I’m looking more at the £50 mark I think.

https://www.lrparts.net/empty-url-key-11.html
LR Parts Liverpool

I have used this company for years and had them fitted in all my FFRR's and just fitted one in the RRS. Great value for money, easy to fit, hard wearing and washable too. I can take a picture tonight if you want to actually see what it looks like fitted.
They sell on ebay also that's where i got mine from as there is sometimes a price difference..

https://www.ukcustomcovers.com/ Current: 2010 RRS 3.6 TDV8 HSE
Past: 2012 4.4 TDV8 Vogue
2007 3.6 TDV8 Vogue
2005 3.0 TD6 Vogue
2007 D3 Commercial
2001 D2 4.0 V8 ES
1998 D1 3.9 V8 ES
1988 3.5 V8 EFI Vogue
Others: 2007 VW Touareg 3.0 V6
1998 Jeep Grand Cherokee 4.0
1990 Mitsubishi Shogun 2.6