Cheap 12v compressor from a car accessory shop works for me. Strip off the outer casing and carry it in a small bag. Replace the ciggie adaptor with a couple of crocodile clips to connect to your battery.
Takes a bloody log time and a lot of effort to pump a tyre with a hand pump
even if yer good at w888ing
Ive got a 4 quid from petrol station helped out at least a dozen times