The answer is fairly obvious isnt it. Capita IT Services can deliver the WAN, LAN & Wifi. Capita had a dispute with TFL for which they incurred a penalty of £25m. 12 months later, Capita win a contract with TFL worth £80m.
I am pretty sure that the deal reflects good business to the tax payer as Capita IT Services are no doubt doing the job for next to nothing to help resolve the £25m dispute at Group level.
That's not going to help increase profitability for Capita, a wise man once said turnover is vanity and profitability is sanity..