http://matrix.itasoftware.com is your friend to play around with finding an airline
Qatar Airlines
LHR-BOM out and BOM-EDI back would be £2,201.41
LHR-HYD out and HYD-EDI back would be £2,187.41
Try checking out the Qatar Airlines website direct
QR should give you 140+40+40+140=360 TPs
However, flights from London are on Sunday morning. Frankly, given your outbound timings above, only the BA direct flight on Sunday evening will work that is going for £4,200