I would prefer long legged ones, not shorts. I have had a look online and couldn't find any for over 2's in M&S, Next, Debenhams, John Lewis, La Redoute/Vertbaudet or Adams. Mothercare had one but they were £20 and Boots had some but they were out of stock. My son is 98th percentile for height and weight so maybe could even do 3-4 year olds.
I have seen some on ebay but wanted the option of taking them back easily if they didn't fit.
Its odd that theres loads on ebay for over 2s but most of what I have found in the shops are for under 2s.
Thanks