Happened to me a few years ago. The AA recovery man was able to open the car using a lock pick. Took him about 30mins of messing about, but got the door open and crawled through the back seats and got the key
He used something similar to this
Loboo Idea Original LISHI HU92 V.3 2-in-1 Car Pick and Decoder Tool Auto Lock Pick Set, Professional Locksmith Tool for BMW, Land Rover, HUF, Rolls Royce, etc https://www.amazon.co.uk/dp/B07F3HP3Y3/ref=cm_sw_r_apan_i_ERBMCC7BM8SNZP6V0R6N
He used something similar to this
Loboo Idea Original LISHI HU92 V.3 2-in-1 Car Pick and Decoder Tool Auto Lock Pick Set, Professional Locksmith Tool for BMW, Land Rover, HUF, Rolls Royce, etc https://www.amazon.co.uk/dp/B07F3HP3Y3/ref=cm_sw_r_apan_i_ERBMCC7BM8SNZP6V0R6N