For the Maplin version

Resistors

All 0.4 W 1% metal film

R1,2   1k0        2 off    

Capacitors

C1-3   10n disc    3 off    

Seems a bit small. I'd fit 100n capacitors. And a 22u electrolytic.

Semiconductors

IC1    74LS126           *
IC2    74LS04            
IC3    74LS03            is 74LS125 on my board
IC4    74LS11            
IC5    74LS00            
IC6    74LS32            is 74LS02 on my board
IC7    74LS27            
IC8    74LS260           
IC9    74LS74            
IC10   74LS374           
IC11   2716(M8)          

Miscellaneous

P.C. Board
Track pin 5 packets 
Socket 24 Pin DIL
Socket 2×23 way 
P.C. Edge connector