Hello Tony,
The truck could be either a Model RL or a Model S Bedford from around the mid to late 1950s. In Australia they were frequently used as bush fire tankers. There is one advertised in Queensland through Price's Truck parts in Dalby. Well, it is on their website, I am not sure if it is still available.
Accessed 6th January 2022 from,
http://pricestruckparts.com.au/wp-co...ford-4x4-2.jpg
In their fire fighting livery Accessed 6th January 2022 from,
https://www.justtrucks.com.au/trucks...4wd/JTM3945607
Citing Wiki...
https://thereaderwiki.com/en/Bedford_RL In Australia, R series Bedfords were used during the 1960s, 1970s and early 1980s by Victoria's Country Fire Authority (CFA).They were built as 800 gallon water capacity, 4 wheel drive bushfire tankers and designated "State Spare Tankers". They were also used in New Zealand as military trucks in variants including a wrecker (Army Sustainier Magazine. RNZALR. August 2010. p. 41, Issue 2.)
Kind regards
Lionel